diff --git a/.gitattributes b/.gitattributes
index d1570aff1cd79..cf8890eefbda8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -6,3 +6,4 @@
 /src/Symfony/Component/Runtime export-ignore
 /src/Symfony/Component/Translation/Bridge export-ignore
 /src/Symfony/Component/Intl/Resources/data/*/* linguist-generated=true
+/.git* export-ignore
diff --git a/.github/sync-packages.php b/.github/sync-packages.php
new file mode 100644
index 0000000000000..3d056466016e9
--- /dev/null
+++ b/.github/sync-packages.php
@@ -0,0 +1,75 @@
+<?php
+
+if ('cli' !== PHP_SAPI) {
+    echo "This script can only be run from the command line.\n";
+    exit(1);
+}
+
+$mainRepo = 'https://github.com/symfony/symfony';
+exec('find src/ -name composer.json', $packages);
+
+foreach ($packages as $package) {
+    $package = dirname($package);
+    $c = file_get_contents($package.'/.gitattributes');
+    $c = preg_replace('{^/\.git.*+\n}m', '', $c);
+    $c .= "/.git* export-ignore\n";
+    file_put_contents($package.'/.gitattributes', $c);
+
+
+    @mkdir($package.'/.github');
+    file_put_contents($package.'/.github/PULL_REQUEST_TEMPLATE.md', <<<EOTXT
+        Please do not submit any Pull Requests here. They will be closed.
+        ---
+
+        Please submit your PR here instead:
+        {$mainRepo}
+
+        This repository is what we call a "subtree split": a read-only subset of that main repository.
+        We're looking forward to your PR there!
+
+        EOTXT
+    );
+
+    @mkdir($package.'/.github/workflows');
+    file_put_contents($package.'/.github/workflows/check-subtree-split.yml', <<<EOTXT
+        name: Check subtree split
+
+        on:
+          pull_request_target:
+
+        jobs:
+          close-pull-request:
+            runs-on: ubuntu-latest
+
+            steps:
+            - name: Close pull request
+              uses: actions/github-script@v6
+              with:
+                script: |
+                  if (context.repo.owner === "symfony") {
+                    github.rest.issues.createComment({
+                      owner: "symfony",
+                      repo: context.repo.repo,
+                      issue_number: context.issue.number,
+                      body: `
+                  Thanks for your Pull Request! We love contributions.
+
+                  However, you should instead open your PR on the main repository:
+                  {$mainRepo}
+
+                  This repository is what we call a "subtree split": a read-only subset of that main repository.
+                  We're looking forward to your PR there!
+                  `
+                    });
+
+                    github.rest.pulls.update({
+                      owner: "symfony",
+                      repo: context.repo.repo,
+                      pull_number: context.issue.number,
+                      state: "closed"
+                    });
+                  }
+
+        EOTXT
+    );
+}
diff --git a/.github/sync-translations.php b/.github/sync-translations.php
index 13f05d1459c86..fa3b28a7fec7e 100644
--- a/.github/sync-translations.php
+++ b/.github/sync-translations.php
@@ -108,6 +108,8 @@ function mergeDom(\DOMDocument $dom, \DOMNode $tree, \DOMNode $input)
             if ($catalogue->defines($resname, $domain)) {
                 $translation = $catalogue->get($resname, $domain);
                 $metadata = $catalogue->getMetadata($resname, $domain);
+            } else {
+                $translation = $source;
             }
             $metadata['id'] = $enCatalogue->getMetadata($resname, $domain)['id'];
             if ($resname !== $source) {
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index 5511e08ad6407..cd2bc859ef2a3 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -114,6 +114,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Install system dependencies
         run: |
@@ -201,13 +203,11 @@ jobs:
       - name: Check for changes in translation files
         id: changed-translation-files
         run: |
-          if git diff --quiet HEAD~1 HEAD -- 'src/**/Resources/translations/*.xlf'; then
-            echo "{changed}={true}" >> $GITHUB_OUTPUT
-          else
-            echo "{changed}={false}" >> $GITHUB_OUTPUT
-          fi
+          echo 'changed='$((git diff --quiet HEAD~1 HEAD -- 'src/**/Resources/translations/*.xlf' || (echo 'true' && exit 1)) && echo 'false') >> $GITHUB_OUTPUT
 
       - name: Check Translation Status
         if: steps.changed-translation-files.outputs.changed == 'true'
         run: |
           php src/Symfony/Component/Translation/Resources/bin/translation-status.php -v
+          php .github/sync-translations.php
+          git diff --exit-code src/ || (echo '::error::Run "php .github/sync-translations.php" to fix XLIFF files.' && exit 1)
diff --git a/.github/workflows/package-tests.yml b/.github/workflows/package-tests.yml
index 69f22dab44a9f..a70c4321e36bb 100644
--- a/.github/workflows/package-tests.yml
+++ b/.github/workflows/package-tests.yml
@@ -101,6 +101,7 @@ jobs:
           done
 
           exit $ok
+
       - name: Verify symfony/deprecation-contracts requirements
         run: |
           set +e
@@ -141,3 +142,9 @@ jobs:
           done
 
           exit $ok
+
+      - name: Verify subtree-splits are auto-closed
+        run: |
+          php .github/sync-packages.php
+          git add src/
+          git diff --staged --exit-code || (echo '::error::Please run "php .github/sync-packages.php".' && exit 1)
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 159abdf72ac02..969835cccdde1 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -34,6 +34,7 @@ jobs:
             mode: low-deps
           - php: '8.3'
           - php: '8.4'
+            extensions: amqp,apcu,igbinary,intl,mbstring,memcached,redis
             #mode: experimental
       fail-fast: false
 
@@ -51,7 +52,7 @@ jobs:
           coverage: "none"
           ini-values: date.timezone=UTC,memory_limit=-1,default_socket_timeout=10,session.gc_probability=0,apc.enable_cli=1,zend.assertions=1
           php-version: "${{ matrix.php }}"
-          extensions: "${{ env.extensions }}"
+          extensions: "${{ matrix.extensions || env.extensions }}"
           tools: flex
 
       - name: Configure environment
diff --git a/CHANGELOG-5.4.md b/CHANGELOG-5.4.md
index a4ba8eb29eeef..4675182aec6dd 100644
--- a/CHANGELOG-5.4.md
+++ b/CHANGELOG-5.4.md
@@ -7,6 +7,33 @@ in 5.4 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v5.4.0...v5.4.1
 
+* 5.4.39 (2024-04-29)
+
+ * bug #54751 [Validator]  detect wrong e-mail validation modes (xabbuh)
+ * bug #54723 [Form] read form values using the chain data accessor (xabbuh)
+ * bug #54706 [Yaml] call substr() with integer offsets (xabbuh)
+ * bug #54675 [PropertyInfo] Fix PHPStan properties type in trait (mtarld)
+ * bug #54635 [Serializer] Revert "Fix object normalizer when properties has the same name as their accessor" - it was a BC Break (NeilPeyssard)
+ * bug #54625 [Intl] Remove resources data from classmap generation (shyim)
+ * bug #54598 [TwigBridge]  implement NodeVisitorInterface instead of extending AbstractNodeVisitor (xabbuh)
+ * bug #54072 [HttpKernel] Fix datacollector caster for reference object property (ebuildy)
+ * bug #54564 [Translation] Skip state=needs-translation entries only when source == target (nicolas-grekas)
+ * bug #54579 [Cache] Always select database for persistent redis connections (uncaught)
+ * bug #54059 [Security] Validate that CSRF token in form login is string similar to username/password (glaubinix)
+ * bug #54547 [HttpKernel] Force non lazy controller services (smnandre)
+ * bug #54517 [HttpClient] Let curl handle transfer encoding (michaelhue)
+ * bug #52917 [Serializer] Fix unexpected allowed attributes (mtarld)
+ * bug #54063 [FrameworkBundle] Fix registration of the bundle path to translation (FlyingDR)
+ * bug #54392 [Messenger] Make Doctrine connection ignore unrelated tables on setup (MatTheCat)
+ * bug #54506 [HttpFoundation] Set content-type header in RedirectResponse (smnandre)
+ * bug #52698 [Serializer] Fix XML scalar to object denormalization (mtarld)
+ * bug #54485 [Serializer] Ignore when using #[Ignore] on a non-accessor (nicolas-grekas)
+ * bug #54242 [HttpClient] [EventSourceHttpClient] Fix consuming SSEs with \r\n separator (fancyweb)
+ * bug #54456 [DomCrawler] Encode html entities only if nessecary (ausi)
+ * bug #54471 [Filesystem] Strengthen the check of file permissions in `dumpFile` (alexandre-daubois)
+ * bug #54403 [FrameworkBundle] [Command] Fix #54402: Suppress PHP warning when is_readable() tries to access dirs outside of open_basedir restrictions (Jeldrik Geraedts)
+ * bug #54440 [Console] return null when message with name is not set (xabbuh)
+
 * 5.4.38 (2024-04-02)
 
  * bug #54400 [HttpClient] stop all server processes after tests have run (xabbuh)
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 04ba9eca15947..2c65442650d09 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -14,8 +14,8 @@ The Symfony Connect username in parenthesis allows to get more information
  - Grégoire Pineau (lyrixx)
  - Thomas Calvet (fancyweb)
  - Christophe Coevoet (stof)
- - Wouter de Jong (wouterj)
  - Alexandre Daubois (alexandre-daubois)
+ - Wouter de Jong (wouterj)
  - Jordi Boggiano (seldaek)
  - Maxime Steinhausser (ogizanagi)
  - Kévin Dunglas (dunglas)
@@ -34,8 +34,8 @@ The Symfony Connect username in parenthesis allows to get more information
  - Tobias Nyholm (tobias)
  - Jérôme Tamarelle (gromnan)
  - Samuel ROZE (sroze)
- - Pascal Borreli (pborreli)
  - Antoine Lamirault (alamirault)
+ - Pascal Borreli (pborreli)
  - Romain Neutron
  - HypeMC (hypemc)
  - Joseph Bielawski (stloyd)
@@ -51,14 +51,14 @@ The Symfony Connect username in parenthesis allows to get more information
  - Igor Wiedler
  - Jan Schädlich (jschaedl)
  - Mathieu Lechat (mat_the_cat)
- - Matthias Pigulla (mpdude)
  - Gabriel Ostrolucký (gadelat)
+ - Matthias Pigulla (mpdude)
  - Jonathan Wage (jwage)
  - Valentin Udaltsov (vudaltsov)
+ - Vincent Langlet (deviling)
  - Alexandre Salomé (alexandresalome)
  - Grégoire Paris (greg0ire)
  - William DURAND
- - Vincent Langlet (deviling)
  - ornicar
  - Dany Maillard (maidmaid)
  - Eriksen Costa
@@ -69,6 +69,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Francis Besset (francisbesset)
  - Titouan Galopin (tgalopin)
  - Pierre du Plessis (pierredup)
+ - Simon André (simonandre)
  - David Maicher (dmaicher)
  - Bulat Shakirzyanov (avalanche123)
  - Iltar van der Berg
@@ -77,18 +78,17 @@ The Symfony Connect username in parenthesis allows to get more information
  - Saša Stamenković (umpirsky)
  - Allison Guilhem (a_guilhem)
  - Mathieu Piot (mpiot)
- - Simon André (simonandre)
  - Mathieu Santostefano (welcomattic)
  - Alexander Schranz (alexander-schranz)
  - Vasilij Duško (staff)
+ - Tomasz Kowalczyk (thunderer)
+ - Mathias Arlaud (mtarld)
  - Sarah Khalil (saro0h)
  - Laurent VOULLEMIER (lvo)
  - Konstantin Kudryashov (everzet)
- - Tomasz Kowalczyk (thunderer)
  - Guilhem N (guilhemn)
  - Bilal Amarni (bamarni)
  - Eriksen Costa
- - Mathias Arlaud (mtarld)
  - Florin Patan (florinpatan)
  - Vladimir Reznichenko (kalessil)
  - Peter Rehm (rpet)
@@ -96,8 +96,8 @@ The Symfony Connect username in parenthesis allows to get more information
  - Henrik Bjørnskov (henrikbjorn)
  - David Buchmann (dbu)
  - Andrej Hudec (pulzarraider)
- - Jáchym Toušek (enumag)
  - Ruud Kamphuis (ruudk)
+ - Jáchym Toušek (enumag)
  - Christian Raue
  - Eric Clemmons (ericclemmons)
  - Denis (yethee)
@@ -130,6 +130,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Vasilij Dusko | CREATION
  - Jordan Alliot (jalliot)
  - Phil E. Taylor (philetaylor)
+ - Joel Wurtz (brouznouf)
  - John Wards (johnwards)
  - Théo FIDRY
  - Antoine Hérault (herzult)
@@ -137,7 +138,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Yanick Witschi (toflar)
  - Jeroen Spee (jeroens)
  - Arnaud Le Blanc (arnaud-lb)
- - Joel Wurtz (brouznouf)
  - Sebastiaan Stok (sstok)
  - Maxime STEINHAUSSER
  - Rokas Mikalkėnas (rokasm)
@@ -198,6 +198,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Daniel Gomes (danielcsgomes)
  - Hidenori Goto (hidenorigoto)
  - Niels Keurentjes (curry684)
+ - Dāvis Zālītis (k0d3r1s)
  - Arnaud Kleinpeter (nanocom)
  - Guilherme Blanco (guilhermeblanco)
  - Saif Eddin Gmati (azjezz)
@@ -211,7 +212,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Pablo Godel (pgodel)
  - Florent Mata (fmata)
  - Alessandro Chitolina (alekitto)
- - Dāvis Zālītis (k0d3r1s)
  - Rafael Dohms (rdohms)
  - Roman Martinuk (a2a4)
  - Thomas Landauer (thomas-landauer)
@@ -262,6 +262,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Tyson Andre
  - GDIBass
  - Samuel NELA (snela)
+ - Florent Morselli (spomky_)
  - Vincent AUBERT (vincent)
  - Michael Voříšek
  - zairig imad (zairigimad)
@@ -269,6 +270,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Sébastien Alfaiate (seb33300)
  - James Halsall (jaitsu)
  - Christian Scheb
+ - Bob van de Vijver (bobvandevijver)
  - Guillaume (guill)
  - Mikael Pajunen
  - Warnar Boekkooi (boekkooi)
@@ -294,10 +296,10 @@ The Symfony Connect username in parenthesis allows to get more information
  - Chi-teck
  - Andre Rømcke (andrerom)
  - Baptiste Leduc (korbeil)
+ - Karoly Gossler (connorhu)
  - Timo Bakx (timobakx)
  - soyuka
  - Ruben Gonzalez (rubenrua)
- - Bob van de Vijver (bobvandevijver)
  - Benjamin Dulau (dbenjamin)
  - Markus Fasselt (digilist)
  - Denis Brumann (dbrumann)
@@ -308,6 +310,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Andreas Hucks (meandmymonkey)
  - Noel Guilbert (noel)
  - Bastien Jaillot (bastnic)
+ - Soner Sayakci
  - Stadly
  - Stepan Anchugov (kix)
  - bronze1man
@@ -323,7 +326,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Pierre Minnieur (pminnieur)
  - Dominique Bongiraud
  - Hugo Monteiro (monteiro)
- - Karoly Gossler (connorhu)
  - Bram Leeda (bram123)
  - Dmitrii Poddubnyi (karser)
  - Julien Pauli
@@ -334,6 +336,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Leszek Prabucki (l3l0)
  - Giorgio Premi
  - Thomas Lallement (raziel057)
+ - Yassine Guedidi (yguedidi)
  - François Zaninotto (fzaninotto)
  - Dustin Whittle (dustinwhittle)
  - Timothée Barray (tyx)
@@ -348,7 +351,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Michele Orselli (orso)
  - Sven Paulus (subsven)
  - Maxime Veber (nek-)
- - Soner Sayakci
  - Valentine Boineau (valentineboineau)
  - Rui Marinho (ruimarinho)
  - Patrick Landolt (scube)
@@ -367,7 +369,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Mantis Development
  - Marko Kaznovac (kaznovac)
  - Hidde Wieringa (hiddewie)
- - Florent Morselli (spomky_)
  - dFayet
  - Rob Frawley 2nd (robfrawley)
  - Renan (renanbr)
@@ -377,7 +378,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Daniel Tschinder
  - Christian Schmidt
  - Alexander Kotynia (olden)
- - Yassine Guedidi (yguedidi)
  - Elnur Abdurrakhimov (elnur)
  - Manuel Reinhard (sprain)
  - BoShurik
@@ -418,6 +418,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Marvin Petker
  - GordonsLondon
  - Ray
+ - Asis Pattisahusiwa
  - Philipp Cordes (corphi)
  - Chekote
  - Thomas Adam
@@ -477,6 +478,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Thomas Bisignani (toma)
  - Florian Klein (docteurklein)
  - Damien Alexandre (damienalexandre)
+ - javaDeveloperKid
  - Manuel Kießling (manuelkiessling)
  - Alexey Kopytko (sanmai)
  - Warxcell (warxcell)
@@ -487,7 +489,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Bertrand Zuchuat (garfield-fr)
  - Marc Morera (mmoreram)
  - Quynh Xuan Nguyen (seriquynh)
- - Asis Pattisahusiwa
  - Gabor Toth (tgabi333)
  - realmfoo
  - Fabien S (bafs)
@@ -518,6 +519,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Thierry T (lepiaf)
  - Lorenz Schori
  - Lukáš Holeczy (holicz)
+ - Jonathan H. Wage
  - Jeremy Livingston (jeremylivingston)
  - ivan
  - SUMIDA, Ippei (ippey_s)
@@ -550,6 +552,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Artur Eshenbrener
  - Harm van Tilborg (hvt)
  - Thomas Perez (scullwm)
+ - Gwendolen Lynch
  - Cédric Anne
  - smoench
  - Felix Labrecque
@@ -588,7 +591,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Kirill chEbba Chebunin
  - Pol Dellaiera (drupol)
  - Alex (aik099)
- - javaDeveloperKid
  - Fabien Villepinte
  - SiD (plbsid)
  - Greg Thornton (xdissent)
@@ -668,9 +670,9 @@ The Symfony Connect username in parenthesis allows to get more information
  - Dmitriy Mamontov (mamontovdmitriy)
  - Jan Schumann
  - Matheo Daninos (mathdns)
+ - Neil Peyssard (nepey)
  - Niklas Fiekas
  - Mark Challoner (markchalloner)
- - Jonathan H. Wage
  - Markus Bachmann (baachi)
  - Matthieu Lempereur (mryamous)
  - Gunnstein Lye (glye)
@@ -710,7 +712,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - DerManoMann
  - Jérôme Tanghe (deuchnord)
  - Mathias STRASSER (roukmoute)
- - Gwendolen Lynch
  - simon chrzanowski (simonch)
  - Kamil Kokot (pamil)
  - Seb Koelen
@@ -905,6 +906,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Ramunas Pabreza (doobas)
  - Yuriy Vilks (igrizzli)
  - Terje Bråten
+ - Andrey Lebedev (alebedev)
  - Sebastian Krebs
  - Piotr Stankowski
  - Pierre-Emmanuel Tanguy (petanguy)
@@ -970,7 +972,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Christophe Villeger (seragan)
  - Krystian Marcisz (simivar)
  - Julien Fredon
- - Neil Peyssard (nepey)
  - Xavier Leune (xleune)
  - Hany el-Kerdany
  - Wang Jingyu
@@ -1065,6 +1066,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Robin Lehrmann
  - Szijarto Tamas
  - Thomas P
+ - Stephan Vock (glaubinix)
  - Jaroslav Kuba
  - Benjamin Zikarsky (bzikarsky)
  - Kristijan Kanalaš (kristijan_kanalas_infostud)
@@ -1149,6 +1151,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Ворожцов Максим (myks92)
  - Dalibor Karlović
  - Randy Geraads
+ - Jay Klehr
  - Andreas Leathley (iquito)
  - Vladimir Luchaninov (luchaninov)
  - Sebastian Grodzicki (sgrodzicki)
@@ -1225,6 +1228,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Felds Liscia (felds)
  - Jérémy DECOOL (jdecool)
  - Sergey Panteleev
+ - Alexander Grimalovsky (flying)
  - Andrew Hilobok (hilobok)
  - Noah Heck (myesain)
  - Christian Soronellas (theunic)
@@ -1421,6 +1425,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Michael Roterman (wtfzdotnet)
  - Philipp Keck
  - Pavol Tuka
+ - Shyim
  - Arno Geurts
  - Adán Lobato (adanlobato)
  - Ian Jenkins (jenkoian)
@@ -1482,6 +1487,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - MrMicky
  - Stewart Malik
  - Renan Taranto (renan-taranto)
+ - Ninos Ego
  - Stefan Graupner (efrane)
  - Gemorroj (gemorroj)
  - Adrien Chinour
@@ -1492,6 +1498,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Uladzimir Tsykun
  - iamvar
  - Amaury Leroux de Lens (amo__)
+ - Rene de Lima Barbosa (renedelima)
  - Christian Jul Jensen
  - Alexandre GESLIN
  - The Whole Life to Learn
@@ -1675,6 +1682,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Goran Juric
  - Laurent G. (laurentg)
  - Jean-Baptiste Nahan
+ - Thomas Decaux
  - Nicolas Macherey
  - Asil Barkin Elik (asilelik)
  - Bhujagendra Ishaya
@@ -1740,7 +1748,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Denis Kop
  - Fabrice Locher
  - Kamil Szalewski (szal1k)
- - Andrey Lebedev (alebedev)
  - Jean-Guilhem Rouel (jean-gui)
  - Yoann MOROCUTTI
  - Ivan Yivoff
@@ -1769,6 +1776,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Hans Mackowiak
  - Hugo Fonseca (fonsecas72)
  - Marc Duboc (icemad)
+ - uncaught
  - Martynas Narbutas
  - Timothée BARRAY
  - Nilmar Sanchez Muguercia
@@ -1875,6 +1883,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Clément
  - Gustavo Adrian
  - Jorrit Schippers (jorrit)
+ - Yann (yann_eugone)
  - Matthias Neid
  - Yannick
  - Kuzia
@@ -1908,7 +1917,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Jason Schilling (chapterjason)
  - David de Boer (ddeboer)
  - Eno Mullaraj (emullaraj)
- - Stephan Vock (glaubinix)
  - Guillem Fondin (guillemfondin)
  - Nathan PAGE (nathix)
  - Ryan Rogers
@@ -2005,7 +2013,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Stefano A. (stefano93)
  - PierreRebeilleau
  - AlbinoDrought
- - Jay Klehr
  - Sergey Yuferev
  - Monet Emilien
  - voodooism
@@ -2166,7 +2173,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - ShiraNai7
  - Cedrick Oka
  - Antal Áron (antalaron)
- - Alexander Grimalovsky (flying)
  - Guillaume Sainthillier (guillaume-sainthillier)
  - Ivan Pepelko (pepelko)
  - Vašek Purchart (vasek-purchart)
@@ -2273,6 +2279,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - roog
  - parinz1234
  - Romain Geissler
+ - Martin Auswöger
  - Adrien Moiruad
  - Viktoriia Zolotova
  - Tomaz Ahlin
@@ -2351,6 +2358,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Wouter Diesveld
  - Romain
  - Matěj Humpál
+ - Kasper Hansen
  - Amine Matmati
  - Kristen Gilden
  - caalholm
@@ -2501,6 +2509,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Tiago Garcia (tiagojsag)
  - Artiom
  - Jakub Simon
+ - Eviljeks
  - robin.de.croock
  - Brandon Antonio Lorenzo
  - Bouke Haarsma
@@ -2722,6 +2731,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Thomas Rothe
  - Edwin
  - Troy Crawford
+ - Kirill Roskolii
  - Jeroen van den Nieuwenhuisen
  - nietonfir
  - Andriy
@@ -2933,6 +2943,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Joel Marcey
  - zolikonta
  - Daniel Bartoníček
+ - Michael Hüneburg
  - David Christmann
  - root
  - pf
@@ -3314,6 +3325,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - cmfcmf
  - sarah-eit
  - Michal Forbak
+ - CarolienBEER
  - Drew Butler
  - Alexey Berezuev
  - pawel-lewtak
@@ -3330,7 +3342,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Anatol Belski
  - Javier
  - Alexis BOYER
- - Shyim
  - bch36
  - Kaipi Yann
  - wiseguy1394
@@ -3413,6 +3424,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Alex Nostadt
  - Michael Squires
  - Egor Gorbachev
+ - Julian Krzefski
  - Derek Stephen McLean
  - Norman Soetbeer
  - zorn
@@ -3550,6 +3562,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Arkadiusz Kondas (itcraftsmanpl)
  - j0k (j0k)
  - joris de wit (jdewit)
+ - JG (jege)
  - Jérémy CROMBEZ (jeremy)
  - Jose Manuel Gonzalez (jgonzalez)
  - Joachim Krempel (jkrempel)
diff --git a/src/Symfony/Bridge/Doctrine/.gitattributes b/src/Symfony/Bridge/Doctrine/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Doctrine/.gitattributes
+++ b/src/Symfony/Bridge/Doctrine/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Monolog/.gitattributes b/src/Symfony/Bridge/Monolog/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Monolog/.gitattributes
+++ b/src/Symfony/Bridge/Monolog/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/PhpUnit/.gitattributes b/src/Symfony/Bridge/PhpUnit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/PhpUnit/.gitattributes
+++ b/src/Symfony/Bridge/PhpUnit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/ProxyManager/.gitattributes b/src/Symfony/Bridge/ProxyManager/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/ProxyManager/.gitattributes
+++ b/src/Symfony/Bridge/ProxyManager/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/ProxyManager/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/ProxyManager/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/ProxyManager/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/ProxyManager/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/ProxyManager/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/ProxyManager/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Twig/.gitattributes b/src/Symfony/Bridge/Twig/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Twig/.gitattributes
+++ b/src/Symfony/Bridge/Twig/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
index 213365ed9f1ef..7570126fa80eb 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
@@ -23,12 +23,12 @@
 use Twig\Node\ModuleNode;
 use Twig\Node\Node;
 use Twig\Node\SetNode;
-use Twig\NodeVisitor\AbstractNodeVisitor;
+use Twig\NodeVisitor\NodeVisitorInterface;
 
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  */
-final class TranslationDefaultDomainNodeVisitor extends AbstractNodeVisitor
+final class TranslationDefaultDomainNodeVisitor implements NodeVisitorInterface
 {
     private $scope;
 
@@ -37,10 +37,7 @@ public function __construct()
         $this->scope = new Scope();
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function doEnterNode(Node $node, Environment $env): Node
+    public function enterNode(Node $node, Environment $env): Node
     {
         if ($node instanceof BlockNode || $node instanceof ModuleNode) {
             $this->scope = $this->scope->enter();
@@ -86,10 +83,7 @@ protected function doEnterNode(Node $node, Environment $env): Node
         return $node;
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function doLeaveNode(Node $node, Environment $env): ?Node
+    public function leaveNode(Node $node, Environment $env): ?Node
     {
         if ($node instanceof TransDefaultDomainNode) {
             return null;
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
index ac0ccd21cdd37..39cd4b142af10 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
@@ -18,14 +18,14 @@
 use Twig\Node\Expression\FilterExpression;
 use Twig\Node\Expression\FunctionExpression;
 use Twig\Node\Node;
-use Twig\NodeVisitor\AbstractNodeVisitor;
+use Twig\NodeVisitor\NodeVisitorInterface;
 
 /**
  * TranslationNodeVisitor extracts translation messages.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-final class TranslationNodeVisitor extends AbstractNodeVisitor
+final class TranslationNodeVisitor implements NodeVisitorInterface
 {
     public const UNDEFINED_DOMAIN = '_undefined';
 
@@ -49,10 +49,7 @@ public function getMessages(): array
         return $this->messages;
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function doEnterNode(Node $node, Environment $env): Node
+    public function enterNode(Node $node, Environment $env): Node
     {
         if (!$this->enabled) {
             return $node;
@@ -101,10 +98,7 @@ protected function doEnterNode(Node $node, Environment $env): Node
         return $node;
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function doLeaveNode(Node $node, Environment $env): ?Node
+    public function leaveNode(Node $node, Environment $env): ?Node
     {
         return $node;
     }
diff --git a/src/Symfony/Bundle/DebugBundle/.gitattributes b/src/Symfony/Bundle/DebugBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/DebugBundle/.gitattributes
+++ b/src/Symfony/Bundle/DebugBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/FrameworkBundle/.gitattributes b/src/Symfony/Bundle/FrameworkBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/FrameworkBundle/.gitattributes
+++ b/src/Symfony/Bundle/FrameworkBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index b245dd7a68c1f..3a81a20eca0d0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -202,7 +202,7 @@ private function isNfs(string $dir): bool
 
         if (null === $mounts) {
             $mounts = [];
-            if ('/' === \DIRECTORY_SEPARATOR && is_readable('/proc/mounts') && $files = @file('/proc/mounts')) {
+            if ('/' === \DIRECTORY_SEPARATOR && @is_readable('/proc/mounts') && $files = @file('/proc/mounts')) {
                 foreach ($files as $mount) {
                     $mount = \array_slice(explode(' ', $mount), 1, -3);
                     if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
index 585af1eefd539..e25ee21d72a8f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
@@ -356,7 +356,7 @@ private function getCallableData($callable): array
             $data['type'] = 'closure';
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $data;
             }
             $data['name'] = $r->name;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
index f23be9d579952..12ab4d4f73435 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
@@ -372,7 +372,7 @@ protected function describeCallable($callable, array $options = [])
             $string .= "\n- Type: `closure`";
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $this->write($string."\n");
             }
             $string .= "\n".sprintf('- Name: `%s`', $r->name);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
index 39dc8fb210ab7..f2e7cee78c486 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
@@ -611,7 +611,7 @@ private function formatCallable($callable): string
 
         if ($callable instanceof \Closure) {
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return 'Closure()';
             }
             if ($class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
index 56b1af9bf6c64..8daf880f3043c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
@@ -543,7 +543,7 @@ private function getCallableDocument($callable): \DOMDocument
             $callableXML->setAttribute('type', 'closure');
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $dom;
             }
             $callableXML->setAttribute('name', $r->name);
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index aaaac8d30ab28..731c6e7ee4b3e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -1342,7 +1342,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         $defaultDir = $container->getParameterBag()->resolveValue($config['default_path']);
         foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
             if ($container->fileExists($dir = $bundle['path'].'/Resources/translations') || $container->fileExists($dir = $bundle['path'].'/translations')) {
-                $dirs[] = $dir;
+                $dirs[] = $transPaths[] = $dir;
             } else {
                 $nonExistingDirs[] = $dir;
             }
@@ -2080,10 +2080,9 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
                 ->setFactory([new Reference('messenger.transport_factory'), 'createTransport'])
                 ->setArguments([$transport['dsn'], $transport['options'] + ['transport_name' => $name], new Reference($serializerId)])
                 ->addTag('messenger.receiver', [
-                        'alias' => $name,
-                        'is_failure_transport' => \in_array($name, $failureTransports),
-                    ]
-                )
+                    'alias' => $name,
+                    'is_failure_transport' => \in_array($name, $failureTransports),
+                ])
             ;
             $container->setDefinition($transportId = 'messenger.transport.'.$name, $transportDefinition);
             $senderAliases[$name] = $transportId;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
index ca0cf9b53612e..63964f34f5599 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
@@ -137,6 +137,8 @@
                 service('property_info')->ignoreOnInvalid(),
                 service('serializer.mapping.class_discriminator_resolver')->ignoreOnInvalid(),
                 null,
+                [],
+                service('property_info')->ignoreOnInvalid(),
             ])
 
         ->alias(PropertyNormalizer::class, 'serializer.normalizer.property')
diff --git a/src/Symfony/Bundle/SecurityBundle/.gitattributes b/src/Symfony/Bundle/SecurityBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/SecurityBundle/.gitattributes
+++ b/src/Symfony/Bundle/SecurityBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
index 3757c5657ae4a..6fc6a0ed95f88 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
@@ -252,7 +252,7 @@ private function formatCallable($callable): string
 
         if ($callable instanceof \Closure) {
             $r = new \ReflectionFunction($callable);
-            if (false !== strpos($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return 'Closure()';
             }
             if ($class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
diff --git a/src/Symfony/Bundle/TwigBundle/.gitattributes b/src/Symfony/Bundle/TwigBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/TwigBundle/.gitattributes
+++ b/src/Symfony/Bundle/TwigBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.gitattributes b/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
+++ b/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Asset/.gitattributes b/src/Symfony/Component/Asset/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Asset/.gitattributes
+++ b/src/Symfony/Component/Asset/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/BrowserKit/.gitattributes b/src/Symfony/Component/BrowserKit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/BrowserKit/.gitattributes
+++ b/src/Symfony/Component/BrowserKit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Cache/.gitattributes b/src/Symfony/Component/Cache/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Cache/.gitattributes
+++ b/src/Symfony/Component/Cache/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php b/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
index 623e1582eabf7..650a0c71c1c2e 100644
--- a/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
+++ b/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
@@ -32,7 +32,9 @@ public function testCreateConnection(string $dsn, string $expectedClass)
             throw new SkippedTestSuiteError('REDIS_CLUSTER_HOSTS env var is not defined.');
         }
 
-        $mock = self::getObjectForTrait(RedisTrait::class);
+        $mock = new class () {
+            use RedisTrait;
+        };
         $connection = $mock::createConnection($dsn);
 
         self::assertInstanceOf($expectedClass, $connection);
@@ -44,7 +46,9 @@ public function testUrlDecodeParameters()
             self::markTestSkipped('REDIS_AUTHENTICATED_HOST env var is not defined.');
         }
 
-        $mock = self::getObjectForTrait(RedisTrait::class);
+        $mock = new class () {
+            use RedisTrait;
+        };
         $connection = $mock::createConnection('redis://:p%40ssword@'.getenv('REDIS_AUTHENTICATED_HOST'));
 
         self::assertInstanceOf(\Redis::class, $connection);
@@ -74,4 +78,59 @@ public static function provideCreateConnection(): array
             ],
         ];
     }
+
+    /**
+     * Due to a bug in phpredis, the persistent connection will keep its last selected database. So when re-using
+     * a persistent connection, the database has to be re-selected, too.
+     *
+     * @see https://github.com/phpredis/phpredis/issues/1920
+     *
+     * @group integration
+     */
+    public function testPconnectSelectsCorrectDatabase()
+    {
+        if (!class_exists(\Redis::class)) {
+            throw new SkippedTestSuiteError('The "Redis" class is required.');
+        }
+        if (!getenv('REDIS_HOST')) {
+            throw new SkippedTestSuiteError('REDIS_HOST env var is not defined.');
+        }
+        if (!\ini_get('redis.pconnect.pooling_enabled')) {
+            throw new SkippedTestSuiteError('The bug only occurs when pooling is enabled.');
+        }
+
+        // Limit the connection pool size to 1:
+        if (false === $prevPoolSize = ini_set('redis.pconnect.connection_limit', 1)) {
+            throw new SkippedTestSuiteError('Unable to set pool size');
+        }
+
+        try {
+            $mock = new class () {
+                use RedisTrait;
+            };
+
+            $dsn = 'redis://'.getenv('REDIS_HOST');
+
+            $cacheKey = 'testPconnectSelectsCorrectDatabase';
+            $cacheValueOnDb1 = 'I should only be on database 1';
+
+            // First connect to database 1 and set a value there so we can identify this database:
+            $db1 = $mock::createConnection($dsn, ['dbindex' => 1, 'persistent' => 1]);
+            self::assertInstanceOf(\Redis::class, $db1);
+            self::assertSame(1, $db1->getDbNum());
+            $db1->set($cacheKey, $cacheValueOnDb1);
+            self::assertSame($cacheValueOnDb1, $db1->get($cacheKey));
+
+            // Unset the connection - do not use `close()` or we will lose the persistent connection:
+            unset($db1);
+
+            // Now connect to database 0 and see that we do not actually ended up on database 1 by checking the value:
+            $db0 = $mock::createConnection($dsn, ['dbindex' => 0, 'persistent' => 1]);
+            self::assertInstanceOf(\Redis::class, $db0);
+            self::assertSame(0, $db0->getDbNum()); // Redis is lying here! We could actually be on any database!
+            self::assertNotSame($cacheValueOnDb1, $db0->get($cacheKey)); // This value should not exist if we are actually on db 0
+        } finally {
+            ini_set('redis.pconnect.connection_limit', $prevPoolSize);
+        }
+    }
 }
diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 8fcd7bac5a303..af6390b9bcfa5 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -283,7 +283,10 @@ public static function createConnection(string $dsn, array $options = [])
                     }
 
                     if ((null !== $auth && !$redis->auth($auth))
-                        || ($params['dbindex'] && !$redis->select($params['dbindex']))
+                        // Due to a bug in phpredis we must always select the dbindex if persistent pooling is enabled
+                        // @see https://github.com/phpredis/phpredis/issues/1920
+                        // @see https://github.com/symfony/symfony/issues/51578
+                        || (($params['dbindex'] || ('pconnect' === $connect && '0' !== \ini_get('redis.pconnect.pooling_enabled'))) && !$redis->select($params['dbindex']))
                     ) {
                         $e = preg_replace('/^ERR /', '', $redis->getLastError());
                         throw new InvalidArgumentException('Redis connection failed: '.$e.'.');
@@ -403,9 +406,6 @@ public static function createConnection(string $dsn, array $options = [])
         return $redis;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     protected function doFetch(array $ids)
     {
         if (!$ids) {
@@ -439,17 +439,11 @@ protected function doFetch(array $ids)
         return $result;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     protected function doHave(string $id)
     {
         return (bool) $this->redis->exists($id);
     }
 
-    /**
-     * {@inheritdoc}
-     */
     protected function doClear(string $namespace)
     {
         if ($this->redis instanceof \Predis\ClientInterface) {
@@ -511,9 +505,6 @@ protected function doClear(string $namespace)
         return $cleared;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     protected function doDelete(array $ids)
     {
         if (!$ids) {
@@ -548,9 +539,6 @@ protected function doDelete(array $ids)
         return true;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     protected function doSave(array $values, int $lifetime)
     {
         if (!$values = $this->marshaller->marshall($values, $failed)) {
diff --git a/src/Symfony/Component/Config/.gitattributes b/src/Symfony/Component/Config/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Config/.gitattributes
+++ b/src/Symfony/Component/Config/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Console/.gitattributes b/src/Symfony/Component/Console/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Console/.gitattributes
+++ b/src/Symfony/Component/Console/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Console/Helper/ProgressBar.php b/src/Symfony/Component/Console/Helper/ProgressBar.php
index 1d7b8d4562cb6..6250732eba257 100644
--- a/src/Symfony/Component/Console/Helper/ProgressBar.php
+++ b/src/Symfony/Component/Console/Helper/ProgressBar.php
@@ -169,9 +169,12 @@ public function setMessage(string $message, string $name = 'message')
         $this->messages[$name] = $message;
     }
 
+    /**
+     * @return string|null
+     */
     public function getMessage(string $name = 'message')
     {
-        return $this->messages[$name];
+        return $this->messages[$name] ?? null;
     }
 
     public function getStartTime(): int
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
index a0c6ee129fac2..901bca630cfd1 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
@@ -1173,4 +1173,11 @@ public function testMultiLineFormatIsFullyCorrectlyWithManuallyCleanup()
             stream_get_contents($output->getStream())
         );
     }
+
+    public function testGetNotSetMessage()
+    {
+        $progressBar = new ProgressBar($this->getOutputStream());
+
+        $this->assertNull($progressBar->getMessage());
+    }
 }
diff --git a/src/Symfony/Component/CssSelector/.gitattributes b/src/Symfony/Component/CssSelector/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/CssSelector/.gitattributes
+++ b/src/Symfony/Component/CssSelector/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DependencyInjection/.gitattributes b/src/Symfony/Component/DependencyInjection/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/DependencyInjection/.gitattributes
+++ b/src/Symfony/Component/DependencyInjection/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DomCrawler/.gitattributes b/src/Symfony/Component/DomCrawler/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/DomCrawler/.gitattributes
+++ b/src/Symfony/Component/DomCrawler/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index a6c214add0964..239ace66ef262 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -1151,12 +1151,30 @@ protected function sibling(\DOMNode $node, string $siblingDir = 'nextSibling')
 
     private function parseHtml5(string $htmlContent, string $charset = 'UTF-8'): \DOMDocument
     {
-        return $this->html5Parser->parse($this->convertToHtmlEntities($htmlContent, $charset));
+        if (!$this->supportsEncoding($charset)) {
+            $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+            $charset = 'UTF-8';
+        }
+
+        return $this->html5Parser->parse($htmlContent, ['encoding' => $charset]);
+    }
+
+    private function supportsEncoding(string $encoding): bool
+    {
+        try {
+            return '' === @mb_convert_encoding('', $encoding, 'UTF-8');
+        } catch (\Throwable $e) {
+            return false;
+        }
     }
 
     private function parseXhtml(string $htmlContent, string $charset = 'UTF-8'): \DOMDocument
     {
-        $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+        if ('UTF-8' === $charset && preg_match('//u', $htmlContent)) {
+            $htmlContent = '<?xml encoding="UTF-8">'.$htmlContent;
+        } else {
+            $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+        }
 
         $internalErrors = libxml_use_internal_errors(true);
         if (\LIBXML_VERSION < 20900) {
diff --git a/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php b/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
index 831c2f060b012..e60f3e4ef8b0b 100644
--- a/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
+++ b/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
@@ -194,6 +194,10 @@ public function testAddContent()
         $crawler = $this->createCrawler();
         $crawler->addContent($this->getDoctype().'<html><meta http-equiv="Content-Type" content="text/html; charset=unicode" /><div class="foo"></html></html>');
         $this->assertEquals('foo', $crawler->filterXPath('//div')->attr('class'), '->addContent() ignores bad charset');
+
+        $crawler = $this->createCrawler();
+        $crawler->addContent($this->getDoctype().'<html><script>var foo = "bär";</script></html>', 'text/html; charset=UTF-8');
+        $this->assertEquals('var foo = "bär";', $crawler->filterXPath('//script')->text(), '->addContent() does not interfere with script content');
     }
 
     /**
diff --git a/src/Symfony/Component/Dotenv/.gitattributes b/src/Symfony/Component/Dotenv/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Dotenv/.gitattributes
+++ b/src/Symfony/Component/Dotenv/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/ErrorHandler/.gitattributes b/src/Symfony/Component/ErrorHandler/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/ErrorHandler/.gitattributes
+++ b/src/Symfony/Component/ErrorHandler/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php b/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
index 75a91d9e221cc..2b625f6388af3 100644
--- a/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
@@ -171,7 +171,7 @@ public function testCallErrorExceptionInfo()
             }
             $this->assertSame(__FILE__, $e->getFile());
             $this->assertSame(0, $e->getCode());
-            $this->assertSame('Symfony\Component\ErrorHandler\{closure}', $trace[0]['function']);
+            $this->assertStringMatchesFormat('%A{closure%A}', $trace[0]['function']);
             $this->assertSame(ErrorHandler::class, $trace[0]['class']);
             $this->assertSame('triggerNotice', $trace[1]['function']);
             $this->assertSame(__CLASS__, $trace[1]['class']);
diff --git a/src/Symfony/Component/EventDispatcher/.gitattributes b/src/Symfony/Component/EventDispatcher/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/EventDispatcher/.gitattributes
+++ b/src/Symfony/Component/EventDispatcher/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
index 80d49a168b701..792c175613501 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
@@ -47,7 +47,7 @@ public function __construct($listener, ?string $name, Stopwatch $stopwatch, ?Eve
             $this->pretty = $this->name.'::'.$listener[1];
         } elseif ($listener instanceof \Closure) {
             $r = new \ReflectionFunction($listener);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 $this->pretty = $this->name = 'closure';
             } elseif ($class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
                 $this->name = $class->name;
diff --git a/src/Symfony/Component/ExpressionLanguage/.gitattributes b/src/Symfony/Component/ExpressionLanguage/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/ExpressionLanguage/.gitattributes
+++ b/src/Symfony/Component/ExpressionLanguage/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Filesystem/.gitattributes b/src/Symfony/Component/Filesystem/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Filesystem/.gitattributes
+++ b/src/Symfony/Component/Filesystem/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 909810f98a959..c5cfa47140052 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -691,7 +691,7 @@ public function dumpFile(string $filename, $content)
                 throw new IOException(sprintf('Failed to write file "%s": ', $filename).self::$lastError, 0, null, $filename);
             }
 
-            self::box('chmod', $tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());
+            self::box('chmod', $tmpFile, @fileperms($filename) ?: 0666 & ~umask());
 
             $this->rename($tmpFile, $filename, true);
         } finally {
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 7280d51357bb4..101f30f898714 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -14,6 +14,8 @@
 use Symfony\Component\Filesystem\Exception\InvalidArgumentException;
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Path;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\Process;
 
 /**
  * Test class for Filesystem.
@@ -162,23 +164,32 @@ public function testCopyCreatesTargetDirectoryIfItDoesNotExist()
         $this->assertStringEqualsFile($targetFilePath, 'SOURCE FILE');
     }
 
-    /**
-     * @group network
-     */
     public function testCopyForOriginUrlsAndExistingLocalFileDefaultsToCopy()
     {
-        if (!\in_array('https', stream_get_wrappers())) {
-            $this->markTestSkipped('"https" stream wrapper is not enabled.');
+        if (!\in_array('http', stream_get_wrappers())) {
+            $this->markTestSkipped('"http" stream wrapper is not enabled.');
         }
-        $sourceFilePath = 'https://symfony.com/images/common/logo/logo_symfony_header.png';
-        $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
 
-        file_put_contents($targetFilePath, 'TARGET FILE');
+        $finder = new PhpExecutableFinder();
+        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', 'localhost:8057']));
+        $process->setWorkingDirectory(__DIR__.'/Fixtures/web');
 
-        $this->filesystem->copy($sourceFilePath, $targetFilePath, false);
+        $process->start();
 
-        $this->assertFileExists($targetFilePath);
-        $this->assertEquals(file_get_contents($sourceFilePath), file_get_contents($targetFilePath));
+        do {
+            usleep(50000);
+        } while (!@fopen('http://localhost:8057', 'r'));
+
+        try {
+            $sourceFilePath = 'http://localhost:8057/logo_symfony_header.png';
+            $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
+            file_put_contents($targetFilePath, 'TARGET FILE');
+            $this->filesystem->copy($sourceFilePath, $targetFilePath, false);
+            $this->assertFileExists($targetFilePath);
+            $this->assertEquals(file_get_contents($sourceFilePath), file_get_contents($targetFilePath));
+        } finally {
+            $process->stop();
+        }
     }
 
     public function testMkdirCreatesDirectoriesRecursively()
diff --git a/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php
new file mode 100644
index 0000000000000..b3d9bbc7f3711
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php
@@ -0,0 +1 @@
+<?php
diff --git a/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png
new file mode 100644
index 0000000000000..519ab7c691ba9
Binary files /dev/null and b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png differ
diff --git a/src/Symfony/Component/Filesystem/composer.json b/src/Symfony/Component/Filesystem/composer.json
index e756104cd5fa4..95e9f3f035ee8 100644
--- a/src/Symfony/Component/Filesystem/composer.json
+++ b/src/Symfony/Component/Filesystem/composer.json
@@ -19,7 +19,8 @@
         "php": ">=7.2.5",
         "symfony/polyfill-ctype": "~1.8",
         "symfony/polyfill-mbstring": "~1.8",
-        "symfony/polyfill-php80": "^1.16"
+        "symfony/polyfill-php80": "^1.16",
+        "symfony/process": "^5.4|^6.4"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Filesystem\\": "" },
diff --git a/src/Symfony/Component/Finder/.gitattributes b/src/Symfony/Component/Finder/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Finder/.gitattributes
+++ b/src/Symfony/Component/Finder/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Form/.gitattributes b/src/Symfony/Component/Form/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Form/.gitattributes
+++ b/src/Symfony/Component/Form/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php b/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
index e639bad2a49c2..24de33a6b902e 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
@@ -12,7 +12,9 @@
 namespace Symfony\Component\Form\Extension\Core\DataAccessor;
 
 use Symfony\Component\Form\DataAccessorInterface;
+use Symfony\Component\Form\DataMapperInterface;
 use Symfony\Component\Form\Exception\AccessException;
+use Symfony\Component\Form\Extension\Core\DataMapper\DataMapper;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\PropertyAccess\Exception\AccessException as PropertyAccessException;
 use Symfony\Component\PropertyAccess\Exception\NoSuchIndexException;
@@ -57,15 +59,25 @@ public function setValue(&$data, $propertyValue, FormInterface $form): void
             throw new AccessException('Unable to write the given value as no property path is defined.');
         }
 
+        $getValue = function () use ($data, $form, $propertyPath) {
+            $dataMapper = $this->getDataMapper($form);
+
+            if ($dataMapper instanceof DataMapper && null !== $dataAccessor = $dataMapper->getDataAccessor()) {
+                return $dataAccessor->getValue($data, $form);
+            }
+
+            return $this->getPropertyValue($data, $propertyPath);
+        };
+
         // If the field is of type DateTimeInterface and the data is the same skip the update to
         // keep the original object hash
-        if ($propertyValue instanceof \DateTimeInterface && $propertyValue == $this->getPropertyValue($data, $propertyPath)) {
+        if ($propertyValue instanceof \DateTimeInterface && $propertyValue == $getValue()) {
             return;
         }
 
         // If the data is identical to the value in $data, we are
         // dealing with a reference
-        if (!\is_object($data) || !$form->getConfig()->getByReference() || $propertyValue !== $this->getPropertyValue($data, $propertyPath)) {
+        if (!\is_object($data) || !$form->getConfig()->getByReference() || $propertyValue !== $getValue()) {
             $this->propertyAccessor->setValue($data, $propertyPath, $propertyValue);
         }
     }
@@ -105,4 +117,13 @@ private function getPropertyValue($data, PropertyPathInterface $propertyPath)
             return null;
         }
     }
+
+    private function getDataMapper(FormInterface $form): ?DataMapperInterface
+    {
+        do {
+            $dataMapper = $form->getConfig()->getDataMapper();
+        } while (null === $dataMapper && null !== $form = $form->getParent());
+
+        return $dataMapper;
+    }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php b/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
index 7995842eecbbf..e480f47baa632 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
@@ -88,4 +88,12 @@ public function mapFormsToData(iterable $forms, &$data): void
             }
         }
     }
+
+    /**
+     * @internal
+     */
+    public function getDataAccessor(): DataAccessorInterface
+    {
+        return $this->dataAccessor;
+    }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
index c119d665b85f1..c4a271cd03fb2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
@@ -17,6 +17,8 @@
 use Symfony\Component\Form\Extension\Core\DataAccessor\PropertyPathAccessor;
 use Symfony\Component\Form\Extension\Core\DataMapper\DataMapper;
 use Symfony\Component\Form\Extension\Core\Type\DateType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormConfigBuilder;
 use Symfony\Component\Form\FormFactoryBuilder;
@@ -419,6 +421,25 @@ public function testMapFormsToDataMapsDateTimeInstanceToArrayIfNotSetBefore()
 
         $this->assertEquals(['date' => new \DateTime('2022-08-04', new \DateTimeZone('UTC'))], $form->getData());
     }
+
+    public function testMapFormToDataWithOnlyGetterConfigured()
+    {
+        $person = new DummyPerson('foo');
+        $form = (new FormFactoryBuilder())
+            ->getFormFactory()
+            ->createBuilder(FormType::class, $person)
+            ->add('name', TextType::class, [
+                'getter' => function (DummyPerson $person) {
+                    return $person->myName();
+                },
+            ])
+            ->getForm();
+        $form->submit([
+            'name' => 'bar',
+        ]);
+
+        $this->assertSame('bar', $person->myName());
+    }
 }
 
 class SubmittedForm extends Form
@@ -455,4 +476,9 @@ public function rename($name): void
     {
         $this->name = $name;
     }
+
+    public function setName($name): void
+    {
+        $this->name = $name;
+    }
 }
diff --git a/src/Symfony/Component/HttpClient/.gitattributes b/src/Symfony/Component/HttpClient/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpClient/.gitattributes
+++ b/src/Symfony/Component/HttpClient/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpClient/CurlHttpClient.php b/src/Symfony/Component/HttpClient/CurlHttpClient.php
index 3a2fba025aeff..4c5ced322d5de 100644
--- a/src/Symfony/Component/HttpClient/CurlHttpClient.php
+++ b/src/Symfony/Component/HttpClient/CurlHttpClient.php
@@ -246,9 +246,8 @@ public function request(string $method, string $url, array $options = []): Respo
 
             if (isset($options['normalized_headers']['content-length'][0])) {
                 $curlopts[\CURLOPT_INFILESIZE] = (int) substr($options['normalized_headers']['content-length'][0], \strlen('Content-Length: '));
-            }
-            if (!isset($options['normalized_headers']['transfer-encoding'])) {
-                $curlopts[\CURLOPT_HTTPHEADER][] = 'Transfer-Encoding:'.(isset($curlopts[\CURLOPT_INFILESIZE]) ? '' : ' chunked');
+            } elseif (!isset($options['normalized_headers']['transfer-encoding'])) {
+                $curlopts[\CURLOPT_INFILESIZE] = -1;
             }
 
             if ('POST' !== $method) {
diff --git a/src/Symfony/Component/HttpClient/EventSourceHttpClient.php b/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
index e801c1c4f39c7..89d12e87764fa 100644
--- a/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
+++ b/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
@@ -121,7 +121,7 @@ public function request(string $method, string $url, array $options = []): Respo
                 return;
             }
 
-            $rx = '/((?:\r\n|[\r\n]){2,})/';
+            $rx = '/((?:\r\n){2,}|\r{2,}|\n{2,})/';
             $content = $state->buffer.$chunk->getContent();
 
             if ($chunk->isLast()) {
diff --git a/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php b/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
index 72eb74fb9f289..fff3a0e7c18b7 100644
--- a/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
+++ b/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
@@ -27,9 +27,14 @@
  */
 class EventSourceHttpClientTest extends TestCase
 {
-    public function testGetServerSentEvents()
+    /**
+     * @testWith ["\n"]
+     *           ["\r"]
+     *           ["\r\n"]
+     */
+    public function testGetServerSentEvents(string $sep)
     {
-        $data = <<<TXT
+        $rawData = <<<TXT
 event: builderror
 id: 46
 data: {"foo": "bar"}
@@ -58,6 +63,7 @@ public function testGetServerSentEvents()
 id: 60
 data
 TXT;
+        $data = str_replace("\n", $sep, $rawData);
 
         $chunk = new DataChunk(0, $data);
         $response = new MockResponse('', ['canceled' => false, 'http_method' => 'GET', 'url' => 'http://localhost:8080/events', 'response_headers' => ['content-type: text/event-stream']]);
@@ -83,11 +89,11 @@ public function testGetServerSentEvents()
 
         $expected = [
             new FirstChunk(),
-            new ServerSentEvent("event: builderror\nid: 46\ndata: {\"foo\": \"bar\"}\n\n"),
-            new ServerSentEvent("event: reload\nid: 47\ndata: {}\n\n"),
-            new ServerSentEvent("event: reload\nid: 48\ndata: {}\n\n"),
-            new ServerSentEvent("data: test\ndata:test\nid: 49\nevent: testEvent\n\n\n"),
-            new ServerSentEvent("id: 50\ndata: <tag>\ndata\ndata:   <foo />\ndata\ndata: </tag>\n\n"),
+            new ServerSentEvent(str_replace("\n", $sep, "event: builderror\nid: 46\ndata: {\"foo\": \"bar\"}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "event: reload\nid: 47\ndata: {}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "event: reload\nid: 48\ndata: {}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "data: test\ndata:test\nid: 49\nevent: testEvent\n\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "id: 50\ndata: <tag>\ndata\ndata:   <foo />\ndata\ndata: </tag>\n\n")),
         ];
         $i = 0;
 
diff --git a/src/Symfony/Component/HttpFoundation/.gitattributes b/src/Symfony/Component/HttpFoundation/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpFoundation/.gitattributes
+++ b/src/Symfony/Component/HttpFoundation/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpFoundation/RedirectResponse.php b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
index 2103280c60184..7b89f0faf610e 100644
--- a/src/Symfony/Component/HttpFoundation/RedirectResponse.php
+++ b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
@@ -103,6 +103,7 @@ public function setTargetUrl(string $url)
 </html>', htmlspecialchars($url, \ENT_QUOTES, 'UTF-8')));
 
         $this->headers->set('Location', $url);
+        $this->headers->set('Content-Type', 'text/html; charset=utf-8');
 
         return $this;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
index 3d2f05ffcd6a2..483bad20c7674 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
@@ -44,6 +44,13 @@ public function testGenerateLocationHeader()
         $this->assertEquals('foo.bar', $response->headers->get('Location'));
     }
 
+    public function testGenerateContentTypeHeader()
+    {
+        $response = new RedirectResponse('foo.bar');
+
+        $this->assertSame('text/html; charset=utf-8', $response->headers->get('Content-Type'));
+    }
+
     public function testGetTargetUrl()
     {
         $response = new RedirectResponse('foo.bar');
diff --git a/src/Symfony/Component/HttpKernel/.gitattributes b/src/Symfony/Component/HttpKernel/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpKernel/.gitattributes
+++ b/src/Symfony/Component/HttpKernel/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php b/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
index 85bb805f34bb6..00e673349e67c 100644
--- a/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
+++ b/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
@@ -33,7 +33,7 @@ public function createArgumentMetadata($controller): array
             $class = $reflection->class;
         } else {
             $reflection = new \ReflectionFunction($controller);
-            if ($class = str_contains($reflection->name, '{closure}') ? null : (\PHP_VERSION_ID >= 80111 ? $reflection->getClosureCalledClass() : $reflection->getClosureScopeClass())) {
+            if ($class = str_contains($reflection->name, '{closure') ? null : (\PHP_VERSION_ID >= 80111 ? $reflection->getClosureCalledClass() : $reflection->getClosureScopeClass())) {
                 $class = $class->name;
             }
         }
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index ccaf66da0438f..14a6f26fdedf7 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -70,9 +70,21 @@ protected function getCasters()
         $casters = [
             '*' => function ($v, array $a, Stub $s, $isNested) {
                 if (!$v instanceof Stub) {
+                    $b = $a;
                     foreach ($a as $k => $v) {
-                        if (\is_object($v) && !$v instanceof \DateTimeInterface && !$v instanceof Stub) {
-                            $a[$k] = new CutStub($v);
+                        if (!\is_object($v) || $v instanceof \DateTimeInterface || $v instanceof Stub) {
+                            continue;
+                        }
+
+                        try {
+                            $a[$k] = $s = new CutStub($v);
+
+                            if ($b[$k] === $s) {
+                                // we've hit a non-typed reference
+                                $a[$k] = $v;
+                            }
+                        } catch (\TypeError $e) {
+                            // we've hit a typed reference
                         }
                     }
                 }
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
index c56013c2eaad8..6931336f06d17 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
@@ -474,7 +474,7 @@ private function parseController($controller)
                 'line' => $r->getStartLine(),
             ];
 
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $controller;
             }
             $controller['method'] = $r->name;
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
index 3dbaff564194b..0bdba44b0e299 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
@@ -70,6 +70,7 @@ public function process(ContainerBuilder $container)
         foreach ($container->findTaggedServiceIds($this->controllerTag, true) as $id => $tags) {
             $def = $container->getDefinition($id);
             $def->setPublic(true);
+            $def->setLazy(false);
             $class = $def->getClass();
             $autowire = $def->isAutowired();
             $bindings = $def->getBindings();
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index e9507631059c1..d4fe96b6b7b56 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -78,11 +78,11 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
      */
     private static $freshCache = [];
 
-    public const VERSION = '5.4.38';
-    public const VERSION_ID = 50438;
+    public const VERSION = '5.4.39';
+    public const VERSION_ID = 50439;
     public const MAJOR_VERSION = 5;
     public const MINOR_VERSION = 4;
-    public const RELEASE_VERSION = 38;
+    public const RELEASE_VERSION = 39;
     public const EXTRA_VERSION = '';
 
     public const END_OF_MAINTENANCE = '11/2024';
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
index ae79a3c93c504..043affeda4d7b 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
@@ -15,6 +15,8 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Tests\Fixtures\DataCollector\CloneVarDataCollector;
+use Symfony\Component\HttpKernel\Tests\Fixtures\UsePropertyInDestruct;
+use Symfony\Component\HttpKernel\Tests\Fixtures\WithPublicObjectProperty;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 
 class DataCollectorTest extends TestCase
@@ -35,4 +37,68 @@ public function testCloneVarExistingFilePath()
 
         $this->assertSame($filePath, $c->getData()[0]);
     }
+
+    /**
+     * @requires PHP 8
+     */
+    public function testClassPublicObjectProperty()
+    {
+        $parent = new WithPublicObjectProperty();
+        $child = new WithPublicObjectProperty();
+
+        $child->parent = $parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    /**
+     * @requires PHP 8
+     */
+    public function testClassPublicObjectPropertyAsReference()
+    {
+        $parent = new WithPublicObjectProperty();
+        $child = new WithPublicObjectProperty();
+
+        $child->parent = &$parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    /**
+     * @requires PHP 8
+     */
+    public function testClassUsePropertyInDestruct()
+    {
+        $parent = new UsePropertyInDestruct();
+        $child = new UsePropertyInDestruct();
+
+        $child->parent = $parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    /**
+     * @requires PHP 8
+     */
+    public function testClassUsePropertyAsReferenceInDestruct()
+    {
+        $parent = new UsePropertyInDestruct();
+        $child = new UsePropertyInDestruct();
+
+        $child->parent = &$parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
index becb9b01bfd0a..e08758cf730e0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
@@ -118,7 +118,7 @@ public static function provideControllerCallables(): array
                 'Closure',
                 function () { return 'foo'; },
                 [
-                    'class' => __NAMESPACE__.'\{closure}',
+                    'class' => \PHP_VERSION_ID >= 80400 ? sprintf('{closure:%s():%d}', __METHOD__, __LINE__ - 2) : __NAMESPACE__.'\{closure}',
                     'method' => null,
                     'file' => __FILE__,
                     'line' => __LINE__ - 5,
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
index 3dec2e912af71..40e6ea0748fc3 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
@@ -25,6 +25,7 @@
 use Symfony\Component\DependencyInjection\TypedReference;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\DependencyInjection\RegisterControllerArgumentLocatorsPass;
+use Symfony\Component\HttpKernel\Tests\Fixtures\DataCollector\DummyController;
 use Symfony\Component\HttpKernel\Tests\Fixtures\Suit;
 
 class RegisterControllerArgumentLocatorsPassTest extends TestCase
@@ -285,6 +286,21 @@ public function testControllersAreMadePublic()
         $this->assertTrue($container->getDefinition('foo')->isPublic());
     }
 
+    public function testControllersAreMadeNonLazy()
+    {
+        $container = new ContainerBuilder();
+        $container->register('argument_resolver.service')->addArgument([]);
+
+        $container->register('foo', DummyController::class)
+            ->addTag('controller.service_arguments')
+            ->setLazy(true);
+
+        $pass = new RegisterControllerArgumentLocatorsPass();
+        $pass->process($container);
+
+        $this->assertFalse($container->getDefinition('foo')->isLazy());
+    }
+
     /**
      * @dataProvider provideBindings
      */
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php
new file mode 100644
index 0000000000000..74225d355aadf
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures;
+
+class UsePropertyInDestruct
+{
+    public string $name;
+    public $parent = null;
+
+    public function __destruct()
+    {
+        if ($this->parent !== null) {
+            $this->parent->name = '';
+        }
+    }
+}
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php
new file mode 100644
index 0000000000000..92ebdb04dd429
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures;
+
+class WithPublicObjectProperty
+{
+    public ?WithPublicObjectProperty $parent = null;
+}
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index 180a79b336adc..67d5ad4b65535 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -41,6 +41,7 @@
         "symfony/stopwatch": "^4.4|^5.0|^6.0",
         "symfony/translation": "^4.4|^5.0|^6.0",
         "symfony/translation-contracts": "^1.1|^2|^3",
+        "symfony/var-dumper": "^4.4.31|^5.4",
         "psr/cache": "^1.0|^2.0|^3.0",
         "twig/twig": "^2.13|^3.0.4"
     },
diff --git a/src/Symfony/Component/Inflector/.gitattributes b/src/Symfony/Component/Inflector/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Inflector/.gitattributes
+++ b/src/Symfony/Component/Inflector/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Inflector/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Inflector/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Inflector/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Inflector/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Inflector/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Inflector/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Intl/.gitattributes b/src/Symfony/Component/Intl/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Intl/.gitattributes
+++ b/src/Symfony/Component/Intl/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Intl/composer.json b/src/Symfony/Component/Intl/composer.json
index 4e1fe6c63e501..699d53199698b 100644
--- a/src/Symfony/Component/Intl/composer.json
+++ b/src/Symfony/Component/Intl/composer.json
@@ -37,7 +37,8 @@
         "classmap": [ "Resources/stubs" ],
         "files": [ "Resources/functions.php" ],
         "exclude-from-classmap": [
-            "/Tests/"
+            "/Tests/",
+            "/Resources/data/"
         ]
     },
     "minimum-stability": "dev"
diff --git a/src/Symfony/Component/Ldap/.gitattributes b/src/Symfony/Component/Ldap/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Ldap/.gitattributes
+++ b/src/Symfony/Component/Ldap/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Lock/.gitattributes b/src/Symfony/Component/Lock/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Lock/.gitattributes
+++ b/src/Symfony/Component/Lock/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/.gitattributes b/src/Symfony/Component/Mailer/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/.gitattributes
+++ b/src/Symfony/Component/Mailer/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.gitattributes b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/OhMySmtp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendinblue/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Sendinblue/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/.gitattributes b/src/Symfony/Component/Messenger/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/.gitattributes
+++ b/src/Symfony/Component/Messenger/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
index e1b4d4afdda44..c4aa03ef14400 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
@@ -205,6 +205,7 @@ public function testItRetrieveTheMessageThatIsOlderThanRedeliverTimeout()
 
     public function testTheTransportIsSetupOnGet()
     {
+        $this->driverConnection->executeStatement('CREATE TABLE unrelated (unknown_type_column)');
         $this->assertFalse($this->createSchemaManager()->tablesExist(['messenger_messages']));
         $this->assertNull($this->connection->get());
 
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
index 79b302760ad22..100058d240fcd 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
@@ -289,7 +289,7 @@ public function setup(): void
     {
         $configuration = $this->driverConnection->getConfiguration();
         $assetFilter = $configuration->getSchemaAssetsFilter();
-        $configuration->setSchemaAssetsFilter(static function () { return true; });
+        $configuration->setSchemaAssetsFilter(function (string $tableName) { return $tableName === $this->configuration['table_name']; });
         $this->updateSchema();
         $configuration->setSchemaAssetsFilter($assetFilter);
         $this->autoSetup = false;
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/ConnectionTest.php b/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/ConnectionTest.php
index 71ccea4c1752e..2e5c7bf0b043e 100644
--- a/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/ConnectionTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/ConnectionTest.php
@@ -154,7 +154,7 @@ public function testKeepGettingPendingMessages()
         $redis = $this->createMock(\Redis::class);
 
         $redis->expects($this->exactly(3))->method('xreadgroup')
-            ->with('symfony', 'consumer', ['queue' => 0], 1, null)
+            ->with('symfony', 'consumer', ['queue' => 0], 1, 1)
             ->willReturn(['queue' => [['message' => json_encode(['body' => 'Test', 'headers' => []])]]]);
 
         $connection = Connection::fromDsn('redis://localhost/queue', ['delete_after_ack' => true], $redis);
@@ -250,7 +250,7 @@ public function testGetPendingMessageFirst()
         $redis = $this->createMock(\Redis::class);
 
         $redis->expects($this->exactly(1))->method('xreadgroup')
-            ->with('symfony', 'consumer', ['queue' => '0'], 1, null)
+            ->with('symfony', 'consumer', ['queue' => '0'], 1, 1)
             ->willReturn(['queue' => [['message' => '{"body":"1","headers":[]}']]]);
 
         $connection = Connection::fromDsn('redis://localhost/queue', ['delete_after_ack' => true], $redis);
@@ -275,11 +275,11 @@ public function testClaimAbandonedMessageWithRaceCondition()
             ->willReturnCallback(function (...$args) {
                 static $series = [
                     // first call for pending messages
-                    [['symfony', 'consumer', ['queue' => '0'], 1, null], []],
+                    [['symfony', 'consumer', ['queue' => '0'], 1, 1], []],
                     // second call because of claimed message (redisid-123)
-                    [['symfony', 'consumer', ['queue' => '0'], 1, null], []],
+                    [['symfony', 'consumer', ['queue' => '0'], 1, 1], []],
                     // third call because of no result (other consumer claimed message redisid-123)
-                    [['symfony', 'consumer', ['queue' => '>'], 1, null], []],
+                    [['symfony', 'consumer', ['queue' => '>'], 1, 1], []],
                 ];
 
                 [$expectedArgs, $return] = array_shift($series);
@@ -311,9 +311,9 @@ public function testClaimAbandonedMessage()
             ->willReturnCallback(function (...$args) {
                 static $series = [
                     // first call for pending messages
-                    [['symfony', 'consumer', ['queue' => '0'], 1, null], []],
+                    [['symfony', 'consumer', ['queue' => '0'], 1, 1], []],
                     // second call because of claimed message (redisid-123)
-                    [['symfony', 'consumer', ['queue' => '0'], 1, null], ['queue' => [['message' => '{"body":"1","headers":[]}']]]],
+                    [['symfony', 'consumer', ['queue' => '0'], 1, 1], ['queue' => [['message' => '{"body":"1","headers":[]}']]]],
                 ];
 
                 [$expectedArgs, $return] = array_shift($series);
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
index 16633a354fcfe..a5e1c21707a78 100644
--- a/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
@@ -304,7 +304,7 @@ private function claimOldPendingMessages()
         try {
             // This could soon be optimized with https://github.com/antirez/redis/issues/5212 or
             // https://github.com/antirez/redis/issues/6256
-            $pendingMessages = $this->connection->xpending($this->stream, $this->group, '-', '+', 1);
+            $pendingMessages = $this->connection->xpending($this->stream, $this->group, '-', '+', 1) ?: [];
         } catch (\RedisException $e) {
             throw new TransportException($e->getMessage(), 0, $e);
         }
@@ -389,6 +389,7 @@ public function get(): ?array
                 $this->group,
                 $this->consumer,
                 [$this->stream => $messageId],
+                1,
                 1
             );
         } catch (\RedisException $e) {
diff --git a/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php b/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
index 5957e3f13823b..20d2c2043a7e7 100644
--- a/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
+++ b/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
@@ -34,7 +34,7 @@ public function __construct(callable $handler, array $options = [])
 
         $r = new \ReflectionFunction($handler);
 
-        if (str_contains($r->name, '{closure}')) {
+        if (str_contains($r->name, '{closure')) {
             $this->name = 'Closure';
         } elseif (!$handler = $r->getClosureThis()) {
             $class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass();
diff --git a/src/Symfony/Component/Mime/.gitattributes b/src/Symfony/Component/Mime/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mime/.gitattributes
+++ b/src/Symfony/Component/Mime/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php b/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
index d0a692761fdf7..3d306f2e8ff86 100644
--- a/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
+++ b/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
@@ -138,32 +138,35 @@ public function testFromPathWithNotAFile()
 
     public function testFromPathWithUrl()
     {
-        if (!\in_array('https', stream_get_wrappers())) {
-            $this->markTestSkipped('"https" stream wrapper is not enabled.');
+        if (!\in_array('http', stream_get_wrappers())) {
+            $this->markTestSkipped('"http" stream wrapper is not enabled.');
         }
 
         $finder = new PhpExecutableFinder();
-        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', '127.0.0.1:8057']));
+        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', 'localhost:8057']));
         $process->setWorkingDirectory(__DIR__.'/../Fixtures/web');
         $process->start();
 
-        do {
-            usleep(50000);
-        } while (!@fopen('http://127.0.0.1:8057', 'r'));
-
-        $p = DataPart::fromPath($file = 'http://localhost:8057/logo_symfony_header.png');
-        $content = file_get_contents($file);
-        $this->assertEquals($content, $p->getBody());
-        $maxLineLength = 76;
-        $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr($p->bodyToString(), 0, $maxLineLength));
-        $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr(implode('', iterator_to_array($p->bodyToIterable())), 0, $maxLineLength));
-        $this->assertEquals('image', $p->getMediaType());
-        $this->assertEquals('png', $p->getMediaSubType());
-        $this->assertEquals(new Headers(
-            new ParameterizedHeader('Content-Type', 'image/png', ['name' => 'logo_symfony_header.png']),
-            new UnstructuredHeader('Content-Transfer-Encoding', 'base64'),
-            new ParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'logo_symfony_header.png', 'filename' => 'logo_symfony_header.png'])
-        ), $p->getPreparedHeaders());
+        try {
+            do {
+                usleep(50000);
+            } while (!@fopen('http://localhost:8057', 'r'));
+            $p = DataPart::fromPath($file = 'http://localhost:8057/logo_symfony_header.png');
+            $content = file_get_contents($file);
+            $this->assertEquals($content, $p->getBody());
+            $maxLineLength = 76;
+            $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr($p->bodyToString(), 0, $maxLineLength));
+            $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr(implode('', iterator_to_array($p->bodyToIterable())), 0, $maxLineLength));
+            $this->assertEquals('image', $p->getMediaType());
+            $this->assertEquals('png', $p->getMediaSubType());
+            $this->assertEquals(new Headers(
+                new ParameterizedHeader('Content-Type', 'image/png', ['name' => 'logo_symfony_header.png']),
+                new UnstructuredHeader('Content-Transfer-Encoding', 'base64'),
+                new ParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'logo_symfony_header.png', 'filename' => 'logo_symfony_header.png'])
+            ), $p->getPreparedHeaders());
+        } finally {
+            $process->stop();
+        }
     }
 
     public function testHasContentId()
diff --git a/src/Symfony/Component/Notifier/.gitattributes b/src/Symfony/Component/Notifier/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/.gitattributes
+++ b/src/Symfony/Component/Notifier/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Nexmo/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Nexmo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Nexmo/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Nexmo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Nexmo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes b/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendinblue/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sendinblue/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sendinblue/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/OptionsResolver/.gitattributes b/src/Symfony/Component/OptionsResolver/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/OptionsResolver/.gitattributes
+++ b/src/Symfony/Component/OptionsResolver/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PasswordHasher/.gitattributes b/src/Symfony/Component/PasswordHasher/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PasswordHasher/.gitattributes
+++ b/src/Symfony/Component/PasswordHasher/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php b/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
index 5dc301916eed3..4cf708b806296 100644
--- a/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
+++ b/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
@@ -103,7 +103,11 @@ public function testBcryptWithNulByte()
         $hasher = new NativePasswordHasher(null, null, 4, \PASSWORD_BCRYPT);
         $plainPassword = "a\0b";
 
-        $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        if (\PHP_VERSION_ID < 80218 || \PHP_VERSION_ID >= 80300 && \PHP_VERSION_ID < 80305) {
+            // password_hash() does not accept passwords containing NUL bytes since PHP 8.2.18 and 8.3.5
+            $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        }
+
         $this->assertTrue($hasher->verify($hasher->hash($plainPassword), $plainPassword));
     }
 
diff --git a/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php b/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
index 3dc97c768f6f1..101c09fc46ed3 100644
--- a/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
+++ b/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
@@ -78,7 +78,11 @@ public function testBcryptWithNulByte()
         $hasher = new SodiumPasswordHasher(null, null);
         $plainPassword = "a\0b";
 
-        $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        if (\PHP_VERSION_ID < 80218 || \PHP_VERSION_ID >= 80300 && \PHP_VERSION_ID < 80305) {
+            // password_hash() does not accept passwords containing NUL bytes since PHP 8.2.18 and 8.3.5
+            $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        }
+
         $this->assertTrue($hasher->verify((new NativePasswordHasher(null, null, 4, \PASSWORD_BCRYPT))->hash($plainPassword), $plainPassword));
     }
 
diff --git a/src/Symfony/Component/Process/.gitattributes b/src/Symfony/Component/Process/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Process/.gitattributes
+++ b/src/Symfony/Component/Process/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyAccess/.gitattributes b/src/Symfony/Component/PropertyAccess/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PropertyAccess/.gitattributes
+++ b/src/Symfony/Component/PropertyAccess/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyInfo/.gitattributes b/src/Symfony/Component/PropertyInfo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PropertyInfo/.gitattributes
+++ b/src/Symfony/Component/PropertyInfo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
index 2f169690bff12..0596eb24fc20e 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
@@ -233,6 +233,14 @@ private function getDocBlockFromProperty(string $class, string $property): ?arra
             return null;
         }
 
+        $reflector = $reflectionProperty->getDeclaringClass();
+
+        foreach ($reflector->getTraits() as $trait) {
+            if ($trait->hasProperty($property)) {
+                return $this->getDocBlockFromProperty($trait->getName(), $property);
+            }
+        }
+
         if (null === $rawDocNode = $reflectionProperty->getDocComment() ?: null) {
             return null;
         }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
index d8fa9b9192c51..fd11fcbeb8c63 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
@@ -19,6 +19,7 @@
 use Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\RootDummy\RootDummyItem;
+use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace\DummyInAnotherNamespace;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\DummyUsedInTrait;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\DummyUsingTrait;
 use Symfony\Component\PropertyInfo\Type;
@@ -311,6 +312,7 @@ public static function propertiesDefinedByTraitsProvider(): array
             ['propertyInTraitPrimitiveType', new Type(Type::BUILTIN_TYPE_STRING)],
             ['propertyInTraitObjectSameNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, DummyUsedInTrait::class)],
             ['propertyInTraitObjectDifferentNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, Dummy::class)],
+            ['dummyInAnotherNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, DummyInAnotherNamespace::class)],
         ];
     }
 
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php
new file mode 100644
index 0000000000000..5ae6b60b59731
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace;
+
+class DummyInAnotherNamespace
+{
+}
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php
new file mode 100644
index 0000000000000..0cb6decf6daa5
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace;
+
+trait DummyTraitInAnotherNamespace
+{
+    /**
+     * @var DummyInAnotherNamespace
+     */
+    public $dummyInAnotherNamespace;
+}
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
index bfd75a36f41c1..d978d5f184aa4 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
@@ -11,7 +11,10 @@
 
 namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage;
 
+use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace\DummyTraitInAnotherNamespace;
+
 class DummyUsingTrait
 {
     use DummyTrait;
+    use DummyTraitInAnotherNamespace;
 }
diff --git a/src/Symfony/Component/RateLimiter/.gitattributes b/src/Symfony/Component/RateLimiter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/RateLimiter/.gitattributes
+++ b/src/Symfony/Component/RateLimiter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Routing/.gitattributes b/src/Symfony/Component/Routing/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Routing/.gitattributes
+++ b/src/Symfony/Component/Routing/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Runtime/.gitattributes b/src/Symfony/Component/Runtime/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Runtime/.gitattributes
+++ b/src/Symfony/Component/Runtime/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Core/.gitattributes b/src/Symfony/Component/Security/Core/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Core/.gitattributes
+++ b/src/Symfony/Component/Security/Core/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf b/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
index bfa65ee21f2d1..bd58bee7037c2 100644
--- a/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
+++ b/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
@@ -8,11 +8,11 @@
             </trans-unit>
             <trans-unit id="2">
                 <source>Authentication credentials could not be found.</source>
-                <target>Loginoplysninger kan ikke findes.</target>
+                <target>Loginoplysninger kunne ikke findes.</target>
             </trans-unit>
             <trans-unit id="3">
                 <source>Authentication request could not be processed due to a system problem.</source>
-                <target>Godkendelsesanmodning kan ikke behandles på grund af et systemfejl.</target>
+                <target>Godkendelsesanmodningen kunne ikke behandles på grund af en systemfejl.</target>
             </trans-unit>
             <trans-unit id="4">
                 <source>Invalid credentials.</source>
@@ -20,7 +20,7 @@
             </trans-unit>
             <trans-unit id="5">
                 <source>Cookie has already been used by someone else.</source>
-                <target>Cookie er allerede brugt af en anden.</target>
+                <target>Cookie er allerede blevet brugt af en anden.</target>
             </trans-unit>
             <trans-unit id="6">
                 <source>Not privileged to request the resource.</source>
@@ -32,19 +32,19 @@
             </trans-unit>
             <trans-unit id="9">
                 <source>No authentication provider found to support the authentication token.</source>
-                <target>Ingen godkendelsesudbyder er fundet til understøttelsen af godkendelsestoken.</target>
+                <target>Ingen godkendelsesudbyder blev fundet til at understøtte godkendelsestoken.</target>
             </trans-unit>
             <trans-unit id="10">
                 <source>No session available, it either timed out or cookies are not enabled.</source>
-                <target>Ingen session tilgængelig, sessionen er enten udløbet eller cookies er ikke aktiveret.</target>
+                <target>Ingen session er tilgængelig. Den er enten udløbet eller cookies er ikke aktiveret.</target>
             </trans-unit>
             <trans-unit id="11">
                 <source>No token could be found.</source>
-                <target>Ingen token kan findes.</target>
+                <target>Ingen token kunne findes.</target>
             </trans-unit>
             <trans-unit id="12">
                 <source>Username could not be found.</source>
-                <target>Brugernavn kan ikke findes.</target>
+                <target>Brugernavn kunne ikke findes.</target>
             </trans-unit>
             <trans-unit id="13">
                 <source>Account has expired.</source>
@@ -64,15 +64,15 @@
             </trans-unit>
             <trans-unit id="17">
                 <source>Too many failed login attempts, please try again later.</source>
-                <target>For mange fejlede login forsøg, prøv venligst senere.</target>
+                <target>For mange mislykkede loginforsøg. Prøv venligst igen senere.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>Invalid or expired login link.</source>
-                <target>Ugyldigt eller udløbet login link.</target>
+                <target>Ugyldigt eller udløbet login-link.</target>
             </trans-unit>
             <trans-unit id="19">
                 <source>Too many failed login attempts, please try again in %minutes% minute.</source>
-                <target>For mange fejlede login forsøg, prøv igen om %minutes% minut.</target>
+                <target>For mange mislykkede loginforsøg. Prøv venligst igen om %minutes% minut.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Security/Csrf/.gitattributes b/src/Symfony/Component/Security/Csrf/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Csrf/.gitattributes
+++ b/src/Symfony/Component/Security/Csrf/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Guard/.gitattributes b/src/Symfony/Component/Security/Guard/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Guard/.gitattributes
+++ b/src/Symfony/Component/Security/Guard/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Guard/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Guard/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Guard/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Guard/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Guard/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Guard/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Http/.gitattributes b/src/Symfony/Component/Security/Http/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Http/.gitattributes
+++ b/src/Symfony/Component/Security/Http/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php b/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
index 3279067f50f7a..5b4de2b454d69 100644
--- a/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
+++ b/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
@@ -161,6 +161,10 @@ private function getCredentials(Request $request): array
             throw new BadRequestHttpException(sprintf('The key "%s" must be a string, "%s" given.', $this->options['password_parameter'], \gettype($credentials['password'])));
         }
 
+        if (!\is_string($credentials['csrf_token'] ?? '') && (!\is_object($credentials['csrf_token']) || !method_exists($credentials['csrf_token'], '__toString'))) {
+            throw new BadRequestHttpException(sprintf('The key "%s" must be a string, "%s" given.', $this->options['csrf_parameter'], \gettype($credentials['csrf_token'])));
+        }
+
         return $credentials;
     }
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php b/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
index ca0dd119b89ef..d9595e09b50f6 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
@@ -165,6 +165,54 @@ public function __toString()
         $this->assertSame('s$cr$t', $credentialsBadge->getPassword());
     }
 
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithArray($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => []]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "array" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithInt($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => 42]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "integer" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithObject($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => new \stdClass()]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "object" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
     public static function postOnlyDataProvider()
     {
         yield [true];
diff --git a/src/Symfony/Component/Semaphore/.gitattributes b/src/Symfony/Component/Semaphore/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Semaphore/.gitattributes
+++ b/src/Symfony/Component/Semaphore/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Serializer/.gitattributes b/src/Symfony/Component/Serializer/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Serializer/.gitattributes
+++ b/src/Symfony/Component/Serializer/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/AnnotationLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/AnnotationLoader.php
index 9082a3cc260ca..0137575cd9445 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/AnnotationLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/AnnotationLoader.php
@@ -106,7 +106,7 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata)
 
             $accessorOrMutator = preg_match('/^(get|is|has|set)(.+)$/i', $method->name, $matches);
             if ($accessorOrMutator) {
-                $attributeName = $reflectionClass->hasProperty($method->name) ? $method->name : lcfirst($matches[2]);
+                $attributeName = lcfirst($matches[2]);
 
                 if (isset($attributesMetadata[$attributeName])) {
                     $attributeMetadata = $attributesMetadata[$attributeName];
@@ -138,11 +138,9 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata)
 
                     $attributeMetadata->setSerializedName($annotation->getSerializedName());
                 } elseif ($annotation instanceof Ignore) {
-                    if (!$accessorOrMutator) {
-                        throw new MappingException(sprintf('Ignore on "%s::%s()" cannot be added. Ignore can only be added on methods beginning with "get", "is", "has" or "set".', $className, $method->name));
+                    if ($accessorOrMutator) {
+                        $attributeMetadata->setIgnore(true);
                     }
-
-                    $attributeMetadata->setIgnore(true);
                 } elseif ($annotation instanceof Context) {
                     if (!$accessorOrMutator) {
                         throw new MappingException(sprintf('Context on "%s::%s()" cannot be added. Context can only be added on methods beginning with "get", "is", "has" or "set".', $className, $method->name));
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 4b03fa9ddb116..5a51bde39b7ab 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -147,6 +147,8 @@ public function supportsNormalization($data, ?string $format = null)
      */
     public function normalize($object, ?string $format = null, array $context = [])
     {
+        $context['_read_attributes'] = true;
+
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
         }
@@ -359,6 +361,8 @@ public function supportsDenormalization($data, string $type, ?string $format = n
      */
     public function denormalize($data, string $type, ?string $format = null, array $context = [])
     {
+        $context['_read_attributes'] = false;
+
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
         }
@@ -369,6 +373,10 @@ public function denormalize($data, string $type, ?string $format = null, array $
             return null;
         }
 
+        if (XmlEncoder::FORMAT === $format && !\is_array($data)) {
+            $data = ['#' => $data];
+        }
+
         $allowedAttributes = $this->getAllowedAttributes($type, $context, true);
         $normalizedData = $this->prepareForDenormalization($data);
         $extraAttributes = [];
diff --git a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
index 8d749b4e1d489..9aaac706f2133 100644
--- a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
@@ -36,6 +36,7 @@
  */
 class GetSetMethodNormalizer extends AbstractObjectNormalizer
 {
+    private static $reflectionCache = [];
     private static $setterAccessibleCache = [];
 
     /**
@@ -43,7 +44,7 @@ class GetSetMethodNormalizer extends AbstractObjectNormalizer
      */
     public function supportsNormalization($data, ?string $format = null)
     {
-        return parent::supportsNormalization($data, $format) && $this->supports(\get_class($data));
+        return parent::supportsNormalization($data, $format) && $this->supports(\get_class($data), true);
     }
 
     /**
@@ -51,7 +52,7 @@ public function supportsNormalization($data, ?string $format = null)
      */
     public function supportsDenormalization($data, string $type, ?string $format = null)
     {
-        return parent::supportsDenormalization($data, $type, $format) && $this->supports($type);
+        return parent::supportsDenormalization($data, $type, $format) && $this->supports($type, false);
     }
 
     /**
@@ -63,18 +64,22 @@ public function hasCacheableSupportsMethod(): bool
     }
 
     /**
-     * Checks if the given class has any getter method.
+     * Checks if the given class has any getter or setter method.
      */
-    private function supports(string $class): bool
+    private function supports(string $class, bool $readAttributes): bool
     {
         if (null !== $this->classDiscriminatorResolver && $this->classDiscriminatorResolver->getMappingForClass($class)) {
             return true;
         }
 
-        $class = new \ReflectionClass($class);
-        $methods = $class->getMethods(\ReflectionMethod::IS_PUBLIC);
-        foreach ($methods as $method) {
-            if ($this->isGetMethod($method)) {
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        foreach ($reflection->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
+            if ($readAttributes ? $this->isGetMethod($reflectionMethod) : $this->isSetMethod($reflectionMethod)) {
                 return true;
             }
         }
@@ -95,6 +100,17 @@ private function isGetMethod(\ReflectionMethod $method): bool
             );
     }
 
+    /**
+     * Checks if a method's name matches /^set.+$/ and can be called non-statically with one parameter.
+     */
+    private function isSetMethod(\ReflectionMethod $method): bool
+    {
+        return !$method->isStatic()
+            && (\PHP_VERSION_ID < 80000 || !$method->getAttributes(Ignore::class))
+            && 1 === $method->getNumberOfRequiredParameters()
+            && str_starts_with($method->name, 'set');
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -124,19 +140,17 @@ protected function extractAttributes(object $object, ?string $format = null, arr
      */
     protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = [])
     {
-        $ucfirsted = ucfirst($attribute);
-
-        $getter = 'get'.$ucfirsted;
+        $getter = 'get'.$attribute;
         if (method_exists($object, $getter) && \is_callable([$object, $getter])) {
             return $object->$getter();
         }
 
-        $isser = 'is'.$ucfirsted;
+        $isser = 'is'.$attribute;
         if (method_exists($object, $isser) && \is_callable([$object, $isser])) {
             return $object->$isser();
         }
 
-        $haser = 'has'.$ucfirsted;
+        $haser = 'has'.$attribute;
         if (method_exists($object, $haser) && \is_callable([$object, $haser])) {
             return $object->$haser();
         }
@@ -149,7 +163,7 @@ protected function getAttributeValue(object $object, string $attribute, ?string
      */
     protected function setAttributeValue(object $object, string $attribute, $value, ?string $format = null, array $context = [])
     {
-        $setter = 'set'.ucfirst($attribute);
+        $setter = 'set'.$attribute;
         $key = \get_class($object).':'.$setter;
 
         if (!isset(self::$setterAccessibleCache[$key])) {
@@ -160,4 +174,48 @@ protected function setAttributeValue(object $object, string $attribute, $value,
             $object->$setter($value);
         }
     }
+
+    protected function isAllowedAttribute($classOrObject, string $attribute, ?string $format = null, array $context = [])
+    {
+        if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
+            return false;
+        }
+
+        $class = \is_object($classOrObject) ? \get_class($classOrObject) : $classOrObject;
+
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        if ($context['_read_attributes'] ?? true) {
+            foreach (['get', 'is', 'has'] as $getterPrefix) {
+                $getter = $getterPrefix.$attribute;
+                $reflectionMethod = $reflection->hasMethod($getter) ? $reflection->getMethod($getter) : null;
+                if ($reflectionMethod && $this->isGetMethod($reflectionMethod)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        $setter = 'set'.$attribute;
+        if ($reflection->hasMethod($setter) && $this->isSetMethod($reflection->getMethod($setter))) {
+            return true;
+        }
+
+        $constructor = $reflection->getConstructor();
+
+        if ($constructor && $constructor->isPublic()) {
+            foreach ($constructor->getParameters() as $parameter) {
+                if ($parameter->getName() === $attribute) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
index 0dafaa7b7bd5f..a1ab11177482e 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
@@ -14,7 +14,11 @@
 use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
 use Symfony\Component\PropertyAccess\PropertyAccess;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
+use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
+use Symfony\Component\PropertyInfo\PropertyInfoExtractorInterface;
 use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
+use Symfony\Component\PropertyInfo\PropertyWriteInfo;
+use Symfony\Component\Serializer\Annotation\Ignore;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Mapping\AttributeMetadata;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorResolverInterface;
@@ -28,11 +32,14 @@
  */
 class ObjectNormalizer extends AbstractObjectNormalizer
 {
+    private static $reflectionCache = [];
+
     protected $propertyAccessor;
+    protected $propertyInfoExtractor;
 
     private $objectClassResolver;
 
-    public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory = null, ?NameConverterInterface $nameConverter = null, ?PropertyAccessorInterface $propertyAccessor = null, ?PropertyTypeExtractorInterface $propertyTypeExtractor = null, ?ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, ?callable $objectClassResolver = null, array $defaultContext = [])
+    public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory = null, ?NameConverterInterface $nameConverter = null, ?PropertyAccessorInterface $propertyAccessor = null, ?PropertyTypeExtractorInterface $propertyTypeExtractor = null, ?ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, ?callable $objectClassResolver = null, array $defaultContext = [], ?PropertyInfoExtractorInterface $propertyInfoExtractor = null)
     {
         if (!class_exists(PropertyAccess::class)) {
             throw new LogicException('The ObjectNormalizer class requires the "PropertyAccess" component. Install "symfony/property-access" to use it.');
@@ -45,6 +52,8 @@ public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory
         $this->objectClassResolver = $objectClassResolver ?? function ($class) {
             return \is_object($class) ? \get_class($class) : $class;
         };
+
+        $this->propertyInfoExtractor = $propertyInfoExtractor ?: new ReflectionExtractor();
     }
 
     /**
@@ -86,25 +95,17 @@ protected function extractAttributes(object $object, ?string $format = null, arr
 
             if (str_starts_with($name, 'get') || str_starts_with($name, 'has')) {
                 // getters and hassers
-                $attributeName = $name;
+                $attributeName = substr($name, 3);
 
                 if (!$reflClass->hasProperty($attributeName)) {
-                    $attributeName = substr($attributeName, 3);
-
-                    if (!$reflClass->hasProperty($attributeName)) {
-                        $attributeName = lcfirst($attributeName);
-                    }
+                    $attributeName = lcfirst($attributeName);
                 }
             } elseif (str_starts_with($name, 'is')) {
                 // issers
-                $attributeName = $name;
+                $attributeName = substr($name, 2);
 
                 if (!$reflClass->hasProperty($attributeName)) {
-                    $attributeName = substr($attributeName, 2);
-
-                    if (!$reflClass->hasProperty($attributeName)) {
-                        $attributeName = lcfirst($attributeName);
-                    }
+                    $attributeName = lcfirst($attributeName);
                 }
             }
 
@@ -182,4 +183,38 @@ protected function getAllowedAttributes($classOrObject, array $context, bool $at
 
         return $allowedAttributes;
     }
+
+    protected function isAllowedAttribute($classOrObject, string $attribute, ?string $format = null, array $context = [])
+    {
+        if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
+            return false;
+        }
+        $class = \is_object($classOrObject) ? \get_class($classOrObject) : $classOrObject;
+
+        if ($context['_read_attributes'] ?? true) {
+            return $this->propertyInfoExtractor->isReadable($class, $attribute) || $this->hasAttributeAccessorMethod($class, $attribute);
+        }
+
+        return $this->propertyInfoExtractor->isWritable($class, $attribute)
+            || ($writeInfo = $this->propertyInfoExtractor->getWriteInfo($class, $attribute)) && PropertyWriteInfo::TYPE_NONE !== $writeInfo->getType();
+    }
+
+    private function hasAttributeAccessorMethod(string $class, string $attribute): bool
+    {
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        if (!$reflection->hasMethod($attribute)) {
+            return false;
+        }
+
+        $method = $reflection->getMethod($attribute);
+
+        return !$method->isStatic()
+            && (\PHP_VERSION_ID < 80000 || !$method->getAttributes(Ignore::class))
+            && !$method->getNumberOfRequiredParameters();
+    }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php
deleted file mode 100644
index 89c8fcb9c399c..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-class SamePropertyAsMethodDummy
-{
-    private $freeTrial;
-    private $hasSubscribe;
-    private $getReady;
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php
deleted file mode 100644
index b4cf205fd57c8..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php
+++ /dev/null
@@ -1,62 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-use Symfony\Component\Serializer\Annotation\SerializedName;
-
-class SamePropertyAsMethodWithMethodSerializedNameDummy
-{
-    private $freeTrial;
-    private $hasSubscribe;
-    private $getReady;
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    /**
-     * @SerializedName("free_trial_method")
-     */
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    /**
-     * @SerializedName("has_subscribe_method")
-     */
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    /**
-     * @SerializedName("get_ready_method")
-     */
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    /**
-     * @SerializedName("is_active_method")
-     */
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php
deleted file mode 100644
index 04dc64a3c71c0..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php
+++ /dev/null
@@ -1,65 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-use Symfony\Component\Serializer\Annotation\SerializedName;
-
-class SamePropertyAsMethodWithPropertySerializedNameDummy
-{
-    /**
-     * @SerializedName("free_trial_property")
-     */
-    private $freeTrial;
-
-    /**
-     * @SerializedName("has_subscribe_property")
-     */
-    private $hasSubscribe;
-
-    /**
-     * @SerializedName("get_ready_property")
-     */
-    private $getReady;
-
-    /**
-     * @SerializedName("is_active_property")
-     */
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTestCase.php b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTestCase.php
index 5c3a686647010..b60981f7ad2ea 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTestCase.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTestCase.php
@@ -141,13 +141,12 @@ public function testCanHandleUnrelatedIgnoredMethods()
     {
         $class = $this->getNamespace().'\Entity45016';
 
-        $this->expectException(MappingException::class);
-        $this->expectExceptionMessage(sprintf('Ignore on "%s::badIgnore()" cannot be added', $class));
-
         $metadata = new ClassMetadata($class);
         $loader = $this->getLoaderForContextMapping();
 
         $loader->loadClassMetadata($metadata);
+
+        $this->assertSame(['id'], array_keys($metadata->getAttributesMetadata()));
     }
 
     public function testIgnoreGetterWirhRequiredParameterIfIgnoreAnnotationIsUsed()
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
index 5243eb2f2ef1a..2ca7d79fef075 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -17,6 +17,7 @@
 use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
 use Symfony\Component\PropertyInfo\Type;
+use Symfony\Component\Serializer\Annotation\SerializedName;
 use Symfony\Component\Serializer\Exception\ExtraAttributesException;
 use Symfony\Component\Serializer\Exception\InvalidArgumentException;
 use Symfony\Component\Serializer\Exception\LogicException;
@@ -30,6 +31,7 @@
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory;
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
 use Symfony\Component\Serializer\Mapping\Loader\AnnotationLoader;
+use Symfony\Component\Serializer\NameConverter\MetadataAwareNameConverter;
 use Symfony\Component\Serializer\Normalizer\AbstractNormalizer;
 use Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer;
 use Symfony\Component\Serializer\Normalizer\CustomNormalizer;
@@ -658,6 +660,34 @@ protected function createChildContext(array $parentContext, string $attribute, ?
 
         $this->assertFalse($normalizer->childContextCacheKey);
     }
+
+    public function testDenormalizeXmlScalar()
+    {
+        $normalizer = new class () extends AbstractObjectNormalizer
+        {
+            public function __construct()
+            {
+                parent::__construct(null, new MetadataAwareNameConverter(new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()))));
+            }
+
+            protected function extractAttributes(object $object, ?string $format = null, array $context = []): array
+            {
+                return [];
+            }
+
+            protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = [])
+            {
+                return null;
+            }
+
+            protected function setAttributeValue(object $object, string $attribute, $value, ?string $format = null, array $context = [])
+            {
+                $object->$attribute = $value;
+            }
+        };
+
+        $this->assertSame('scalar', $normalizer->denormalize('scalar', XmlScalarDummy::class, 'xml')->value);
+    }
 }
 
 class AbstractObjectNormalizerDummy extends AbstractObjectNormalizer
@@ -781,6 +811,12 @@ class DummyChild
     public $bar;
 }
 
+class XmlScalarDummy
+{
+    /** @SerializedName("#") */
+    public $value;
+}
+
 class SerializerCollectionDummy implements SerializerInterface, DenormalizerInterface
 {
     private $normalizers;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
index f6b2c3e69ed9b..e7c23cf58a574 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -521,6 +521,23 @@ public function testDenormalizeWithDiscriminator()
 
         $this->assertEquals($denormalized, $normalizer->denormalize(['type' => 'two', 'url' => 'url'], GetSetMethodDummyInterface::class));
     }
+
+    public function testSupportsAndNormalizeWithOnlyParentGetter()
+    {
+        $obj = new GetSetDummyChild();
+        $obj->setFoo('foo');
+
+        $this->assertTrue($this->normalizer->supportsNormalization($obj));
+        $this->assertSame(['foo' => 'foo'], $this->normalizer->normalize($obj));
+    }
+
+    public function testSupportsAndDenormalizeWithOnlyParentSetter()
+    {
+        $this->assertTrue($this->normalizer->supportsDenormalization(['foo' => 'foo'], GetSetDummyChild::class));
+
+        $obj = $this->normalizer->denormalize(['foo' => 'foo'], GetSetDummyChild::class);
+        $this->assertSame('foo', $obj->getFoo());
+    }
 }
 
 class GetSetDummy
@@ -825,3 +842,22 @@ public function setUrl(string $url): void
         $this->url = $url;
     }
 }
+
+class GetSetDummyChild extends GetSetDummyParent
+{
+}
+
+class GetSetDummyParent
+{
+    private $foo;
+
+    public function getFoo()
+    {
+        return $this->foo;
+    }
+
+    public function setFoo($foo)
+    {
+        $this->foo = $foo;
+    }
+}
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index 6bc99f9132854..830817b8b673b 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -18,6 +18,7 @@
 use Symfony\Component\PropertyInfo\Extractor\PhpStanExtractor;
 use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
+use Symfony\Component\Serializer\Annotation\Ignore;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Exception\RuntimeException;
 use Symfony\Component\Serializer\Exception\UnexpectedValueException;
@@ -40,9 +41,6 @@
 use Symfony\Component\Serializer\Tests\Fixtures\Php74Dummy;
 use Symfony\Component\Serializer\Tests\Fixtures\Php74DummyPrivate;
 use Symfony\Component\Serializer\Tests\Fixtures\Php80Dummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodDummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodWithMethodSerializedNameDummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodWithPropertySerializedNameDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\SiblingHolder;
 use Symfony\Component\Serializer\Tests\Normalizer\Features\AttributesTestTrait;
 use Symfony\Component\Serializer\Tests\Normalizer\Features\CacheableObjectAttributesTestTrait;
@@ -873,51 +871,29 @@ public function testNormalizeStdClass()
         $this->assertSame(['baz' => 'baz'], $this->normalizer->normalize($o2));
     }
 
-    public function testSamePropertyAsMethod()
-    {
-        $object = new SamePropertyAsMethodDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'freeTrial' => 'free_trial',
-            'hasSubscribe' => 'has_subscribe',
-            'getReady' => 'get_ready',
-            'isActive' => 'is_active',
-        ];
-
-        $this->assertSame($expected, $this->normalizer->normalize($object));
-    }
-
-    public function testSamePropertyAsMethodWithPropertySerializedName()
+    public function testNormalizeWithIgnoreAnnotationAndPrivateProperties()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
-        $this->normalizer = new ObjectNormalizer($classMetadataFactory, new MetadataAwareNameConverter($classMetadataFactory));
-        $this->normalizer->setSerializer($this->serializer);
-
-        $object = new SamePropertyAsMethodWithPropertySerializedNameDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'free_trial_property' => 'free_trial',
-            'has_subscribe_property' => 'has_subscribe',
-            'get_ready_property' => 'get_ready',
-            'is_active_property' => 'is_active',
-        ];
+        $normalizer = new ObjectNormalizer($classMetadataFactory);
 
-        $this->assertSame($expected, $this->normalizer->normalize($object));
+        $this->assertSame(['foo' => 'foo'], $normalizer->normalize(new ObjectDummyWithIgnoreAnnotationAndPrivateProperty()));
     }
 
-    public function testSamePropertyAsMethodWithMethodSerializedName()
+    public function testDenormalizeWithIgnoreAnnotationAndPrivateProperties()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
-        $this->normalizer = new ObjectNormalizer($classMetadataFactory, new MetadataAwareNameConverter($classMetadataFactory));
-        $this->normalizer->setSerializer($this->serializer);
+        $normalizer = new ObjectNormalizer($classMetadataFactory);
 
-        $object = new SamePropertyAsMethodWithMethodSerializedNameDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'free_trial_method' => 'free_trial',
-            'has_subscribe_method' => 'has_subscribe',
-            'get_ready_method' => 'get_ready',
-            'is_active_method' => 'is_active',
-        ];
+        $obj = $normalizer->denormalize([
+            'foo' => 'set',
+            'ignore' => 'set',
+            'private' => 'set',
+        ], ObjectDummyWithIgnoreAnnotationAndPrivateProperty::class);
+
+        $expected = new ObjectDummyWithIgnoreAnnotationAndPrivateProperty();
+        $expected->foo = 'set';
 
-        $this->assertSame($expected, $this->normalizer->normalize($object));
+        $this->assertEquals($expected, $obj);
     }
 }
 
@@ -1094,7 +1070,7 @@ public function __get($name)
         }
     }
 
-    public function __isset($name)
+    public function __isset($name): bool
     {
         return 'foo' === $name;
     }
@@ -1207,3 +1183,13 @@ public function getInner()
         return $this->inner;
     }
 }
+
+class ObjectDummyWithIgnoreAnnotationAndPrivateProperty
+{
+    public $foo = 'foo';
+
+    /** @Ignore */
+    public $ignored = 'ignored';
+
+    private $private = 'private';
+}
diff --git a/src/Symfony/Component/Stopwatch/.gitattributes b/src/Symfony/Component/Stopwatch/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Stopwatch/.gitattributes
+++ b/src/Symfony/Component/Stopwatch/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/String/.gitattributes b/src/Symfony/Component/String/.gitattributes
index 0f57d864c994d..166549d614199 100644
--- a/src/Symfony/Component/String/.gitattributes
+++ b/src/Symfony/Component/String/.gitattributes
@@ -2,5 +2,4 @@
 /Resources/WcswidthDataGenerator.php export-ignore
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/String/LazyString.php b/src/Symfony/Component/String/LazyString.php
index 9c7a9c58b659b..5f7e7370d78d8 100644
--- a/src/Symfony/Component/String/LazyString.php
+++ b/src/Symfony/Component/String/LazyString.php
@@ -148,7 +148,7 @@ private static function getPrettyName(callable $callback): string
         } elseif ($callback instanceof \Closure) {
             $r = new \ReflectionFunction($callback);
 
-            if (false !== strpos($r->name, '{closure}') || !$class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
+            if (str_contains($r->name, '{closure') || !$class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
                 return $r->name;
             }
 
diff --git a/src/Symfony/Component/String/Tests/LazyStringTest.php b/src/Symfony/Component/String/Tests/LazyStringTest.php
index c311a3be9ff06..02601b6faaf16 100644
--- a/src/Symfony/Component/String/Tests/LazyStringTest.php
+++ b/src/Symfony/Component/String/Tests/LazyStringTest.php
@@ -65,7 +65,7 @@ public function testReturnTypeError()
         $s = LazyString::fromCallable(function () { return []; });
 
         $this->expectException(\TypeError::class);
-        $this->expectExceptionMessage('Return value of '.__NAMESPACE__.'\{closure}() passed to '.LazyString::class.'::fromCallable() must be of the type string, array returned.');
+        $this->expectExceptionMessageMatches('{^Return value of .*\{closure.*\}\(\) passed to '.preg_quote(LazyString::class).'::fromCallable\(\) must be of the type string, array returned\.$}');
 
         (string) $s;
     }
diff --git a/src/Symfony/Component/Templating/.gitattributes b/src/Symfony/Component/Templating/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Templating/.gitattributes
+++ b/src/Symfony/Component/Templating/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Templating/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Templating/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Templating/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Templating/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Templating/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Templating/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/.gitattributes b/src/Symfony/Component/Translation/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/.gitattributes
+++ b/src/Symfony/Component/Translation/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes b/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes b/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes b/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
index fae07dbe3d958..f4d2396191fac 100644
--- a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
@@ -111,16 +111,20 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, s
                     continue;
                 }
 
-                if (isset($translation->target) && 'needs-translation' === (string) $translation->target->attributes()['state']) {
+                $source = (string) (isset($attributes['resname']) && $attributes['resname'] ? $attributes['resname'] : $translation->source);
+
+                if (isset($translation->target)
+                    && 'needs-translation' === (string) $translation->target->attributes()['state']
+                    && \in_array((string) $translation->target, [$source, (string) $translation->source], true)
+                ) {
                     continue;
                 }
 
-                $source = isset($attributes['resname']) && $attributes['resname'] ? $attributes['resname'] : $translation->source;
                 // If the xlf file has another encoding specified, try to convert it because
                 // simple_xml will always return utf-8 encoded values
                 $target = $this->utf8ToCharset((string) ($translation->target ?? $translation->source), $encoding);
 
-                $catalogue->set((string) $source, $target, $domain);
+                $catalogue->set($source, $target, $domain);
 
                 $metadata = [
                     'source' => (string) $translation->source,
@@ -143,7 +147,7 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, s
                     $metadata['id'] = (string) $attributes['id'];
                 }
 
-                $catalogue->setMetadata((string) $source, $metadata, $domain);
+                $catalogue->setMetadata($source, $metadata, $domain);
             }
         }
     }
diff --git a/src/Symfony/Component/Translation/Resources/bin/translation-status.php b/src/Symfony/Component/Translation/Resources/bin/translation-status.php
index 53e642c00dca7..1ab72c0006db3 100644
--- a/src/Symfony/Component/Translation/Resources/bin/translation-status.php
+++ b/src/Symfony/Component/Translation/Resources/bin/translation-status.php
@@ -166,11 +166,11 @@ function extractLocaleFromFilePath($filePath)
 function extractTranslationKeys($filePath)
 {
     $translationKeys = [];
-    $contents = new \SimpleXMLElement(file_get_contents($filePath));
+    $contents = new SimpleXMLElement(file_get_contents($filePath));
 
     foreach ($contents->file->body->{'trans-unit'} as $translationKey) {
         $translationId = (string) $translationKey['id'];
-        $translationKey = (string) $translationKey->source;
+        $translationKey = (string) ($translationKey['resname'] ?? $translationKey->source);
 
         $translationKeys[$translationId] = $translationKey;
     }
diff --git a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
index 5013d2713b181..99fa9249d7500 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
@@ -52,9 +52,17 @@ public function testLoadRawXliff()
       </trans-unit>
       <trans-unit id="4">
         <source>test</source>
-        <target>with</target>
+        <target state="needs-translation">with</target>
         <note>note</note>
       </trans-unit>
+      <trans-unit id="5">
+        <source>baz</source>
+        <target state="needs-translation">baz</target>
+      </trans-unit>
+      <trans-unit id="6" resname="buz">
+        <source>baz</source>
+        <target state="needs-translation">buz</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>
@@ -65,6 +73,7 @@ public function testLoadRawXliff()
         $this->assertEquals('en', $catalogue->getLocale());
         $this->assertSame([], libxml_get_errors());
         $this->assertContainsOnly('string', $catalogue->all('domain1'));
+        $this->assertSame(['foo', 'extra', 'key', 'test'], array_keys($catalogue->all('domain1')));
     }
 
     public function testLoadWithInternalErrorsEnabled()
diff --git a/src/Symfony/Component/Uid/.gitattributes b/src/Symfony/Component/Uid/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Uid/.gitattributes
+++ b/src/Symfony/Component/Uid/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Validator/.gitattributes b/src/Symfony/Component/Validator/.gitattributes
index c34694db5f725..b9f8f3944ce62 100644
--- a/src/Symfony/Component/Validator/.gitattributes
+++ b/src/Symfony/Component/Validator/.gitattributes
@@ -1,5 +1,4 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
 /Resources/bin/sync-iban-formats.php export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Validator/Constraints/Email.php b/src/Symfony/Component/Validator/Constraints/Email.php
index 912878de763c9..e9e0e06d3b8b7 100644
--- a/src/Symfony/Component/Validator/Constraints/Email.php
+++ b/src/Symfony/Component/Validator/Constraints/Email.php
@@ -62,6 +62,10 @@ public function __construct(
             throw new InvalidArgumentException('The "mode" parameter value is not valid.');
         }
 
+        if (null !== $mode && !\in_array($mode, self::$validationModes, true)) {
+            throw new InvalidArgumentException('The "mode" parameter value is not valid.');
+        }
+
         parent::__construct($options, $groups, $payload);
 
         $this->message = $message ?? $this->message;
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
index 387fb9a649711..f975fc5164edb 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Hierdie waarde is nie 'n geldige MAC-adres nie.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Die URL mis 'n topvlakdomein.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
index dfd398ae95a4f..08012ac233bdd 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>هذه القيمة ليست عنوان MAC صالحًا.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>هذا الرابط يفتقر إلى نطاق المستوى الأعلى.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
index b6152e99dabc0..2eeae5f8a69ce 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu dəyər etibarlı bir MAC ünvanı deyil.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL yuxarı səviyyəli domeni çatışmır.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
index ea7001957572b..a0665388e4bee 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Гэта значэнне не з'яўляецца сапраўдным MAC-адрасам.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Гэтаму URL бракуе дамен верхняга ўзроўню.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
index 5705364f80f84..d2405339f0c35 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
@@ -68,7 +68,7 @@
             </trans-unit>
             <trans-unit id="17">
                 <source>The mime type of the file is invalid ({{ type }}). Allowed mime types are {{ types }}.</source>
-                <target>Mime типа на файла е невалиден ({{ type }}). Разрешени mime типове са {{ types }}.</target>
+                <target>Mime типът на файла е невалиден ({{ type }}). Разрешени mime типове са {{ types }}.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>This value should be {{ limit }} or less.</source>
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден IP адрес.</target>
+                <target>Стойността не е валиден IP адрес.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -156,7 +156,7 @@
             </trans-unit>
             <trans-unit id="42">
                 <source>The size of the image could not be detected.</source>
-                <target>Размера на изображението не може да бъде определен.</target>
+                <target>Размерът на изображението не може да бъде определен.</target>
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">В php.ini не е конфигурирана временна директория, или конфигурираната директория не съществува.</target>
+                <target>В php.ini не е конфигурирана временна директория или конфигурираната директория не съществува.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Тази стойност не е валиден международен банков сметка номер (IBAN).</target>
+                <target>Стойността не е валиден Международен номер на банкова сметка (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Тази стойност не е валиден код за идентификация на бизнеса (BIC).</target>
+                <target>Стойността не е валиден Бизнес идентификационен код (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден UUID.</target>
+                <target>Стойността не е валиден UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -328,7 +328,7 @@
             </trans-unit>
             <trans-unit id="85">
                 <source>This Business Identifier Code (BIC) is not associated with IBAN {{ iban }}.</source>
-                <target>Бизнес идентификационния код (BIC) не е свързан с IBAN {{ iban }}.</target>
+                <target>Бизнес идентификационният код (BIC) не е свързан с IBAN {{ iban }}.</target>
             </trans-unit>
             <trans-unit id="86">
                 <source>This value should be valid JSON.</source>
@@ -360,7 +360,7 @@
             </trans-unit>
             <trans-unit id="93">
                 <source>This password has been leaked in a data breach, it must not be used. Please use another password.</source>
-                <target>Тази парола е компрометирана, не трябва да бъде използвана. Моля използвайте друга парола.</target>
+                <target>Тази парола е компрометирана, не може да бъде използвана. Моля използвайте друга парола.</target>
             </trans-unit>
             <trans-unit id="94">
                 <source>This value should be between {{ min }} and {{ max }}.</source>
@@ -436,7 +436,11 @@
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден MAC адрес.</target>
+                <target>Стойността не е валиден MAC адрес.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>На този URL липсва домейн от най-високо ниво.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
index bff1c8b441e2c..9fd444a59efff 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ova vrijednost nije valjana MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Ovom URL-u nedostaje domena najvišeg nivoa.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
index 2f301e784ac03..652c0a48d693c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
@@ -108,7 +108,7 @@
             </trans-unit>
             <trans-unit id="27">
                 <source>This value is not a valid URL.</source>
-                <target>Aquest valor no és una URL vàlida.</target>
+                <target>Aquest valor no és un URL vàlid.</target>
             </trans-unit>
             <trans-unit id="31">
                 <source>The two values should be equal.</source>
@@ -116,7 +116,7 @@
             </trans-unit>
             <trans-unit id="32">
                 <source>The file is too large. Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>L'arxiu és massa gran. El tamany màxim permés és {{ limit }} {{ suffix }}.</target>
+                <target>L'arxiu és massa gran. La mida màxima permesa és {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="33">
                 <source>The file is too large.</source>
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Aquest valor no és una adreça IP vàlida.</target>
+                <target>Aquest valor no és una adreça IP vàlida.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -160,19 +160,19 @@
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
-                <target>L'amplària de la imatge és massa gran ({{ width }}px). L'amplària màxima permesa són {{ max_width }}px.</target>
+                <target>L'amplària de la imatge és massa gran ({{ width }}px). L'amplària màxima permesa és {{ max_width }}px.</target>
             </trans-unit>
             <trans-unit id="44">
                 <source>The image width is too small ({{ width }}px). Minimum width expected is {{ min_width }}px.</source>
-                <target>L'amplària de la imatge és massa petita ({{ width }}px). L'amplària mínima requerida són {{ min_width }}px.</target>
+                <target>L'amplària de la imatge és massa petita ({{ width }}px). L'amplària mínima requerida és {{ min_width }}px.</target>
             </trans-unit>
             <trans-unit id="45">
                 <source>The image height is too big ({{ height }}px). Allowed maximum height is {{ max_height }}px.</source>
-                <target>L'altura de la imatge és massa gran ({{ height }}px). L'altura màxima permesa són {{ max_height }}px.</target>
+                <target>L'altura de la imatge és massa gran ({{ height }}px). L'altura màxima permesa és {{ max_height }}px.</target>
             </trans-unit>
             <trans-unit id="46">
                 <source>The image height is too small ({{ height }}px). Minimum height expected is {{ min_height }}px.</source>
-                <target>L'altura de la imatge és massa petita ({{ height }}px). L'altura mínima requerida són {{ min_height }}px.</target>
+                <target>L'altura de la imatge és massa petita ({{ height }}px). L'altura mínima requerida és {{ min_height }}px.</target>
             </trans-unit>
             <trans-unit id="47">
                 <source>This value should be the user's current password.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">No s'ha configurat cap carpeta temporal en php.ini, o la carpeta configurada no existeix.</target>
+                <target>No s'ha configurat cap carpeta temporal en php.ini, o la carpeta configurada no existeix.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -200,7 +200,7 @@
             </trans-unit>
             <trans-unit id="53">
                 <source>A PHP extension caused the upload to fail.</source>
-                <target>Una extensió de PHP va fer que la pujada fallara.</target>
+                <target>Una extensió de PHP va fer que la pujada fallarà.</target>
             </trans-unit>
             <trans-unit id="54">
                 <source>This collection should contain {{ limit }} element or more.|This collection should contain {{ limit }} elements or more.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Aquest valor no és un Número de Compte Bancari Internacional (IBAN) vàlid.</target>
+                <target>Aquest valor no és un Número de Compte Bancari Internacional (IBAN) vàlid.</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -276,31 +276,31 @@
             </trans-unit>
             <trans-unit id="72">
                 <source>This value should not be identical to {{ compared_value_type }} {{ compared_value }}.</source>
-                <target>Aquest valor no hauria de idèntic a {{ compared_value_type }} {{ compared_value }}.</target>
+                <target>Aquest valor no hauria de ser idèntic a {{ compared_value_type }} {{ compared_value }}.</target>
             </trans-unit>
             <trans-unit id="73">
                 <source>The image ratio is too big ({{ ratio }}). Allowed maximum ratio is {{ max_ratio }}.</source>
-                <target>La proporció de l'imatge és massa gran ({{ ratio }}). La màxima proporció permesa és {{ max_ratio }}.</target>
+                <target>La proporció de la imatge és massa gran ({{ ratio }}). La màxima proporció permesa és {{ max_ratio }}.</target>
             </trans-unit>
             <trans-unit id="74">
                 <source>The image ratio is too small ({{ ratio }}). Minimum ratio expected is {{ min_ratio }}.</source>
-                <target>La proporció de l'imatge és massa petita ({{ ratio }}). La mínima proporció permesa és {{ max_ratio }}.</target>
+                <target>La proporció de la imatge és massa petita ({{ ratio }}). La mínima proporció permesa és {{ min_ratio }}.</target>
             </trans-unit>
             <trans-unit id="75">
                 <source>The image is square ({{ width }}x{{ height }}px). Square images are not allowed.</source>
-                <target>L'imatge és quadrada({{ width }}x{{ height }}px). Les imatges quadrades no estan permeses.</target>
+                <target>La imatge és quadrada({{ width }}x{{ height }}px). Les imatges quadrades no estan permeses.</target>
             </trans-unit>
             <trans-unit id="76">
                 <source>The image is landscape oriented ({{ width }}x{{ height }}px). Landscape oriented images are not allowed.</source>
-                <target>L'imatge està orientada horitzontalment ({{ width }}x{{ height }}px). Les imatges orientades horitzontalment no estan permeses.</target>
+                <target>La imatge està orientada horitzontalment ({{ width }}x{{ height }}px). Les imatges orientades horitzontalment no estan permeses.</target>
             </trans-unit>
             <trans-unit id="77">
                 <source>The image is portrait oriented ({{ width }}x{{ height }}px). Portrait oriented images are not allowed.</source>
-                <target>L'imatge està orientada verticalment ({{ width }}x{{ height }}px). Les imatges orientades verticalment no estan permeses.</target>
+                <target>La imatge està orientada verticalment ({{ width }}x{{ height }}px). Les imatges orientades verticalment no estan permeses.</target>
             </trans-unit>
             <trans-unit id="78">
                 <source>An empty file is not allowed.</source>
-                <target>No està permès un fixter buit.</target>
+                <target>No està permès un fitxer buit.</target>
             </trans-unit>
             <trans-unit id="79">
                 <source>The host could not be resolved.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Aquest valor no és un Codi d'Identificador de Negocis (BIC) vàlid.</target>
+                <target>Aquest valor no és un Codi d'identificació bancari (BIC) vàlid.</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Aquest valor no és un UUID vàlid.</target>
+                <target>Aquest valor no és un UUID vàlid.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -428,15 +428,19 @@
             </trans-unit>
             <trans-unit id="110">
                 <source>The extension of the file is invalid ({{ extension }}). Allowed extensions are {{ extensions }}.</source>
-                <target state="needs-review-translation">L'extensió del fitxer no és vàlida ({{ extension }}). Les extensions permeses són {{ extensions }}.</target>
+                <target>L'extensió del fitxer no és vàlida ({{ extension }}). Les extensions permeses són {{ extensions }}.</target>
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target state="needs-review-translation">S'ha detectat que la codificació de caràcters no és vàlida ({{ detected }}). Les codificacions permeses són {{ encodings }}.</target>
+                <target>S'ha detectat que la codificació de caràcters no és vàlida ({{ detected }}). Les codificacions permeses són {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Aquest valor no és una adreça MAC vàlida.</target>
+                <target>Aquest valor no és una adreça MAC vàlida.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Aquesta URL no conté un domini de primer nivell.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
index 9ca83564ebadc..2c4c54d9f60af 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Tato hodnota není platnou MAC adresou.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Této URL chybí doména nejvyššího řádu.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
index fd984989e3597..a1ebdf7f81e24 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Nid yw'r gwerth hwn yn gyfeiriad MAC dilys.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Mae'r URL hwn yn colli parth lefel uchaf.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
index 826ef10c955db..808d8c6ad66d9 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne værdi er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL mangler et topdomæne.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
index 9f145fdeed911..3b65306314922 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Dieser Wert ist keine gültige MAC-Adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Dieser URL fehlt eine Top-Level-Domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
index db927e1d51e65..a60471835745b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target >Αυτή η IP διεύθυνση δεν είναι έγκυρη.</target>
+                <target>Αυτή η IP διεύθυνση δεν είναι έγκυρη.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target >Αυτός ο αριθμός δεν είναι έγκυρη UUID.</target>
+                <target>Αυτός ο αριθμός δεν είναι έγκυρη UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Αυτός ο αριθμός δεν είναι έγκυρη διεύθυνση MAC.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Αυτή η διεύθυνση URL λείπει ένας τομέας ανώτατου επιπέδου.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
index 35196e572e0f0..721139011caec 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>This value is not a valid MAC address.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>This URL is missing a top-level domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
index abe75d5304ae3..d58045471c70c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
@@ -404,7 +404,7 @@
             </trans-unit>
             <trans-unit id="104">
                 <source>The filename is too long. It should have {{ filename_max_length }} character or less.|The filename is too long. It should have {{ filename_max_length }} characters or less.</source>
-                <target>El nombre del archivo es demasido largo. Debe tener {{ filename_max_length }} carácter o menos.|El nombre del archivo es demasido largo. Debe tener {{ filename_max_length }} caracteres o menos.</target>
+                <target>El nombre del archivo es demasiado largo. Debe tener {{ filename_max_length }} carácter o menos.|El nombre del archivo es demasiado largo. Debe tener {{ filename_max_length }} caracteres o menos.</target>
             </trans-unit>
             <trans-unit id="105">
                 <source>The password strength is too low. Please use a stronger password.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor no es una dirección MAC válida.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Esta URL no contiene una extensión de dominio (TLD).</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
index 0af593467f591..d9d641322976b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>See väärtus ei ole kehtiv MAC-aadress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Sellel URL-il puudub ülataseme domeen.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
index 6094d1cbca575..bdcbaa393e6a1 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Balio hau ez da MAC helbide baliozko bat.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL honek ez du goi-mailako domeinurik.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
index 1db553c9ffb18..0f2cf5bbf1fed 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">این مقدار یک آدرس MAC معتبر نیست.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">این URL فاقد دامنه سطح بالا است.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
index 324df2c276b79..e9ca6c83347a6 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Tämä arvo ei ole kelvollinen MAC-osoite.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Tästä URL-osoitteesta puuttuu ylätason verkkotunnus.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
index e2d747a49bffe..4e949d838cae7 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Cette valeur n'est pas une adresse MAC valide.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Cette URL doit contenir un domaine de premier niveau.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
index 2723983c5a99d..2a1199bed5c71 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Este valor non é un enderezo MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL non contén un dominio de nivel superior.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
index b1bb894a7fe4b..cd406b4eb86c8 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ערך זה אינו כתובת MAC תקפה.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">לכתובת URL זו חסר דומיין רמה עליונה.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
index eed237ce27e40..a7542a9353293 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ova vrijednost nije valjana MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Ovom URL-u nedostaje vršna domena.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
index df39afd709671..a31848c775fde 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ez az érték nem érvényes MAC-cím.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Az URL-ből hiányzik a legfelső szintű tartomány (top-level domain).</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
index 707301d18c037..d8ff322e6ed76 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Այս արժեքը վավեր MAC հասցե չէ։</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Այս URL-ը չունի վերին մակարդակի դոմեյն:</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
index 1cc60c4d8f9a2..b894c69d855d6 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">Tidak ada folder sementara yang dikonfigurasi di php.ini, atau folder yang dikonfigurasi tidak ada.</target>
+                <target>Tidak ada folder sementara yang dikonfigurasi di php.ini, atau folder yang dikonfigurasi tidak ada.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Nilai ini bukan alamat MAC yang valid.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>URL ini tidak memiliki domain tingkat atas.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
index bd7b25882d82c..74f3a75b0c97e 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Questo valore non è un indirizzo MAC valido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Questo URL è privo di un dominio di primo livello.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
index 0524cd0511e15..c977df4a3e186 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">この値は有効なMACアドレスではありません。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">このURLはトップレベルドメインがありません。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
index 548d82da41683..28d1eff019aac 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Dëse Wäert ass keng gülteg MAC-Adress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Dësen URL feelt eng Top-Level-Domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
index b3ee199fe4c73..e16daea93b80f 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis IP adresas.</target>
+                <target>Ši reikšmė nėra tinkamas IP adresas.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">php.ini nesukonfigūruotas laikinas aplankas, arba sukonfigūruotas aplankas neegzistuoja.</target>
+                <target>php.ini nesukonfigūruotas laikinas aplankas arba sukonfigūruotas aplankas neegzistuoja.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis Tarptautinis Banko Sąskaitos Numeris (IBAN).</target>
+                <target>Ši reikšmė nėra tinkamas Tarptautinis Banko Sąskaitos Numeris (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis Verslo Identifikavimo Kodas (BIC).</target>
+                <target>Ši reikšmė nėra tinkamas Verslo Identifikavimo Kodas (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis UUID.</target>
+                <target>Ši reikšmė nėra tinkamas UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -432,11 +432,15 @@
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target state="needs-review-translation">Nustatyta simbolių koduotė yra netinkama ({{ detected }}). Leidžiamos koduotės yra {{ encodings }}.</target>
+                <target>Aptikta simbolių koduotė yra netinkama ({{ detected }}). Leidžiamos koduotės yra {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis MAC adresas.</target>
+                <target>Ši reikšmė nėra tinkamas MAC adresas.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Šiam URL trūksta aukščiausio lygio domeno.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
index d1222f02b72a5..66e370fea944d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Šī vērtība nav derīga MAC adrese.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Šim URL trūkst augšējā līmeņa domēna.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
index 9d6dec6288b8a..d941f59ea8c8c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Оваа вредност не е валидна MAC адреса.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">На овој URL недостасува домен од највисоко ниво.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
index 4984bb127cab1..4f997a7031592 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Энэ утга хүчинтэй MAC хаяг биш юм.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Энэ URL дээд түвшингийн домейн дутуу байна.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
index e4858336c1c7d..57b6e276dc9c5 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ဤတန်ဖိုးသည် မှန်ကန်သော MAC လိပ်စာ မဟုတ်ပါ။</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">ဤ URL တွင် အမြင့်ဆုံးအဆင့်ဒိုမိန်း ပါဝင်မရှိပါ။</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
index 8b317449ef4e8..27a4d3c55a1ef 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en mangler et toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
index 81d57cab48eec..7596799d0d904 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
@@ -64,11 +64,11 @@
             </trans-unit>
             <trans-unit id="16">
                 <source>The file is too large ({{ size }} {{ suffix }}). Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>Het bestand is te groot ({{ size }} {{ suffix }}). Toegestane maximum grootte is {{ limit }} {{ suffix }}.</target>
+                <target>Het bestand is te groot ({{ size }} {{ suffix }}). De maximale grootte is {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="17">
                 <source>The mime type of the file is invalid ({{ type }}). Allowed mime types are {{ types }}.</source>
-                <target>Het mime type van het bestand is ongeldig ({{ type }}). Toegestane mime types zijn {{ types }}.</target>
+                <target>Het mediatype van het bestand is ongeldig ({{ type }}). De toegestane mediatypes zijn {{ types }}.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>This value should be {{ limit }} or less.</source>
@@ -116,7 +116,7 @@
             </trans-unit>
             <trans-unit id="32">
                 <source>The file is too large. Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>Het bestand is te groot. Toegestane maximum grootte is {{ limit }} {{ suffix }}.</target>
+                <target>Het bestand is te groot. De maximale grootte is {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="33">
                 <source>The file is too large.</source>
@@ -144,7 +144,7 @@
             </trans-unit>
             <trans-unit id="39">
                 <source>This value is not a valid locale.</source>
-                <target>Deze waarde is geen geldige locale.</target>
+                <target>Deze waarde is geen geldige landinstelling.</target>
             </trans-unit>
             <trans-unit id="40">
                 <source>This value is not a valid country.</source>
@@ -160,7 +160,7 @@
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
-                <target>De afbeelding is te breed ({{ width }}px). De maximaal toegestane breedte is {{ max_width }}px.</target>
+                <target>De afbeelding is te breed ({{ width }}px). De maximaal breedte is {{ max_width }}px.</target>
             </trans-unit>
             <trans-unit id="44">
                 <source>The image width is too small ({{ width }}px). Minimum width expected is {{ min_width }}px.</source>
@@ -168,7 +168,7 @@
             </trans-unit>
             <trans-unit id="45">
                 <source>The image height is too big ({{ height }}px). Allowed maximum height is {{ max_height }}px.</source>
-                <target>De afbeelding is te hoog ({{ height }}px). De maximaal toegestane hoogte is {{ max_height }}px.</target>
+                <target>De afbeelding is te hoog ({{ height }}px). De maximaal hoogte is {{ max_height }}px.</target>
             </trans-unit>
             <trans-unit id="46">
                 <source>The image height is too small ({{ height }}px). Minimum height expected is {{ min_height }}px.</source>
@@ -280,11 +280,11 @@
             </trans-unit>
             <trans-unit id="73">
                 <source>The image ratio is too big ({{ ratio }}). Allowed maximum ratio is {{ max_ratio }}.</source>
-                <target>De afbeeldingsverhouding is te groot ({{ ratio }}). Maximale verhouding is {{ max_ratio }}.</target>
+                <target>De afbeeldingsverhouding is te groot ({{ ratio }}). De maximale verhouding is {{ max_ratio }}.</target>
             </trans-unit>
             <trans-unit id="74">
                 <source>The image ratio is too small ({{ ratio }}). Minimum ratio expected is {{ min_ratio }}.</source>
-                <target>De afbeeldingsverhouding is te klein ({{ ratio }}). Minimale verhouding is {{ min_ratio }}.</target>
+                <target>De afbeeldingsverhouding is te klein ({{ ratio }}). De minimale verhouding is {{ min_ratio }}.</target>
             </trans-unit>
             <trans-unit id="75">
                 <source>The image is square ({{ width }}x{{ height }}px). Square images are not allowed.</source>
@@ -324,7 +324,7 @@
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
-                <target>Deze waarde zou een meervoud van {{ compared_value }} moeten zijn.</target>
+                <target>Deze waarde moet een meervoud van {{ compared_value }} zijn.</target>
             </trans-unit>
             <trans-unit id="85">
                 <source>This Business Identifier Code (BIC) is not associated with IBAN {{ iban }}.</source>
@@ -336,7 +336,7 @@
             </trans-unit>
             <trans-unit id="87">
                 <source>This collection should contain only unique elements.</source>
-                <target>Deze collectie moet alleen unieke elementen bevatten.</target>
+                <target>Deze collectie mag alleen unieke elementen bevatten.</target>
             </trans-unit>
             <trans-unit id="88">
                 <source>This value should be positive.</source>
@@ -396,7 +396,7 @@
             </trans-unit>
             <trans-unit id="102">
                 <source>This value is not a valid CIDR notation.</source>
-                <target>Deze waarde is geen geldige CIDR notatie.</target>
+                <target>Deze waarde is geen geldige CIDR-notatie.</target>
             </trans-unit>
             <trans-unit id="103">
                 <source>The value of the netmask should be between {{ min }} and {{ max }}.</source>
@@ -404,11 +404,11 @@
             </trans-unit>
             <trans-unit id="104">
                 <source>The filename is too long. It should have {{ filename_max_length }} character or less.|The filename is too long. It should have {{ filename_max_length }} characters or less.</source>
-                <target>De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakter of minder zijn.</target>
+                <target>De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakter of minder zijn.|De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakters of minder zijn.</target>
             </trans-unit>
             <trans-unit id="105">
                 <source>The password strength is too low. Please use a stronger password.</source>
-                <target>De wachtwoordsterkte is te laag. Gebruik alstublieft een sterker wachtwoord.</target>
+                <target>Het wachtwoord is niet sterk genoeg. Probeer een sterker wachtwoord.</target>
             </trans-unit>
             <trans-unit id="106">
                 <source>This value contains characters that are not allowed by the current restriction-level.</source>
@@ -428,16 +428,20 @@
             </trans-unit>
             <trans-unit id="110">
                 <source>The extension of the file is invalid ({{ extension }}). Allowed extensions are {{ extensions }}.</source>
-                <target>De extensie van het bestand is ongeldig ({{ extension }}). Toegestane extensies zijn {{ extensions }}.</target>
+                <target>De bestandsextensie is ongeldig ({{ extension }}). De toegestane extensies zijn {{ extensions }}.</target>
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target>De gedetecteerde karaktercodering is ongeldig ({{ detected }}). Toegestane coderingen zijn {{ encodings }}.</target>
+                <target>De gedetecteerde karaktercodering is ongeldig ({{ detected }}). De toegestane coderingen zijn {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
                 <target>Deze waarde is geen geldig MAC-adres.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Deze URL mist een top-level domein.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
index 4e1a41dab84d7..de400b7d5115c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikkje ein gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en manglar eit toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
index 8b317449ef4e8..27a4d3c55a1ef 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en mangler et toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
index 29180984e6dfb..42b6e9571b349 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ta wartość nie jest prawidłowym adresem MAC.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Podany URL nie zawiera domeny najwyższego poziomu.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
index 5861a6d1434c6..ed28ee31ea639 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor não é um endereço MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL está faltando um domínio de topo.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
index 4372885085282..e5fe095eace75 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor não é um endereço MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL está faltando um domínio de topo.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
index 426f6319cee20..3d0b819a95441 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Această valoare nu este o adresă MAC validă.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Acest URL îi lipsește un domeniu de nivel superior.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
index 22900d5c266b5..dbee06a984b2c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Это значение не является действительным MAC-адресом.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>В этом URL отсутствует домен верхнего уровня.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
index 9b06bdfb8c12e..8886395e6e8c7 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Táto hodnota nie je platnou MAC adresou.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Tomuto URL chýba doména najvyššej úrovne.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
index 596a66166cf4d..03e750b8af75b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ta vrednost ni veljaven MAC naslov.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Temu URL manjka domena najvišje ravni.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
index 3ac3603144ca2..e9b31b88258d9 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
@@ -447,6 +447,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Kjo nuk është një adresë e vlefshme e Kontrollit të Qasjes në Media (MAC).</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Kësaj URL i mungon një domain i nivelit të lartë.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
index b73cde9bac4a9..0550626d03f4d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ова вредност није валидна MAC адреса.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Овом URL недостаје домен највишег нивоа.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
index cd4ccfb3f3c03..5a85bd764d3cc 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ova vrednost nije validna MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Ovom URL nedostaje domen najvišeg nivoa.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
index ec106fa78ebb7..d7be868c10e96 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Värdet är inte en giltig MAC-adress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denna URL saknar en toppdomän.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
index f109024bfeaf3..0d811ed040f88 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ค่านี้ไม่ใช่ที่อยู่ MAC ที่ถูกต้อง</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL นี้ขาดโดเมนระดับสูงสุด.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
index 632efbc3f3f95..8e8146a0faade 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ang halagang ito ay hindi isang wastong MAC address.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Kulang ang URL na ito sa top-level domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
index 4d66ce8bcbc58..3553af7b74ddd 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu değer geçerli bir MAC adresi değil.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL bir üst düzey alan adı eksik.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
index fcf63e0f675f3..7b9918910b151 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Це значення не є дійсною IP-адресою.</target>
+                <target>Це значення не є дійсною IP-адресою.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">У php.ini не було налаштовано тимчасової теки, або налаштована тека не існує.</target>
+                <target>У php.ini не було налаштовано тимчасової теки, або налаштована тека не існує.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Це значення не є дійсним Міжнародним банківським рахунком (IBAN).</target>
+                <target>Це значення не є дійсним міжнародним номером банківського рахунку (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Це значення не є дійсним Кодом ідентифікації бізнесу (BIC).</target>
+                <target>Це значення не є дійсним банківським кодом (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Це значення не є дійсним UUID.</target>
+                <target>Це значення не є дійсним UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -436,7 +436,11 @@
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Це значення не є дійсною MAC-адресою.</target>
+                <target>Це значення не є дійсною MAC-адресою.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Цьому URL не вистачає домену верхнього рівня.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
index 65719c64ebc4a..f994cb57a84e2 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">یہ قیمت کوئی درست MAC پتہ نہیں ہے۔</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">اس URL میں ٹاپ لیول ڈومین موجود نہیں ہے۔</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
index bf5a2d5f4d9de..1e43fb0fff8cf 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu qiymat haqiqiy MAC manzil emas.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL yuqori darajali domenni o'z ichiga olmaydi.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
index eadf61467c8bc..b3073cc7370a0 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Giá trị này không phải là địa chỉ MAC hợp lệ.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL này thiếu miền cấp cao.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
index 155871cd38df4..fabf86d3b0e13 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">该值不是有效的MAC地址。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">此URL缺少顶级域名。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
index 1a90678627e97..feee108a1bd3d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">這不是一個有效的MAC地址。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">此URL缺少頂級域名。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
index bf719b6f848fb..3451fdfb208e0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
@@ -33,6 +33,13 @@ public function testUnknownModesTriggerException()
         new Email(['mode' => 'Unknown Mode']);
     }
 
+    public function testUnknownModeArgumentsTriggerException()
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('The "mode" parameter value is not valid.');
+        new Email(null, null, 'Unknown Mode');
+    }
+
     public function testNormalizerCanBeSet()
     {
         $email = new Email(['normalizer' => 'trim']);
diff --git a/src/Symfony/Component/VarDumper/.gitattributes b/src/Symfony/Component/VarDumper/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/VarDumper/.gitattributes
+++ b/src/Symfony/Component/VarDumper/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
index 6f1b8f2f25a5e..35fd1e8a99b2b 100644
--- a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
@@ -42,7 +42,7 @@ public static function castClosure(\Closure $c, array $a, Stub $stub, bool $isNe
 
         $a = static::castFunctionAbstract($c, $a, $stub, $isNested, $filter);
 
-        if (!str_contains($c->name, '{closure}')) {
+        if (!str_contains($c->name, '{closure')) {
             $stub->class = isset($a[$prefix.'class']) ? $a[$prefix.'class']->value.'::'.$c->name : $c->name;
             unset($a[$prefix.'class']);
         }
diff --git a/src/Symfony/Component/VarExporter/.gitattributes b/src/Symfony/Component/VarExporter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/VarExporter/.gitattributes
+++ b/src/Symfony/Component/VarExporter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/WebLink/.gitattributes b/src/Symfony/Component/WebLink/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/WebLink/.gitattributes
+++ b/src/Symfony/Component/WebLink/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Workflow/.gitattributes b/src/Symfony/Component/Workflow/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Workflow/.gitattributes
+++ b/src/Symfony/Component/Workflow/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Yaml/.gitattributes b/src/Symfony/Component/Yaml/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Yaml/.gitattributes
+++ b/src/Symfony/Component/Yaml/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 1b193ee6e917f..6b5b273a77ead 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -653,12 +653,12 @@ private function getNextEmbedBlock(?int $indentation = null, bool $inSequence =
             }
 
             if ($this->isCurrentLineBlank()) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
                 continue;
             }
 
             if ($indent >= $newIndent) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
             } elseif ($this->isCurrentLineComment()) {
                 $data[] = $this->currentLine;
             } elseif (0 == $indent) {
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index 741a6ad83c99e..5fa6d08064334 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -1476,13 +1476,13 @@ public static function getBinaryData()
 data: !!binary |
     SGVsbG8gd29ybGQ=
 EOT
-    ],
+            ],
             'containing spaces in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVs bG8gd 29ybGQ=
 EOT
-    ],
+            ],
         ];
     }
 
@@ -2949,6 +2949,11 @@ public function testParseIdeographicSpaces()
         ], $this->parser->parse($expected));
     }
 
+    public function testSkipBlankLines()
+    {
+        $this->assertSame(['foo' => [null]], (new Parser())->parse("foo:\n-\n\n"));
+    }
+
     private function assertSameData($expected, $actual)
     {
         $this->assertEquals($expected, $actual);
diff --git a/src/Symfony/Contracts/.gitattributes b/src/Symfony/Contracts/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Cache/.gitattributes b/src/Symfony/Contracts/Cache/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/Cache/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Deprecation/.gitattributes b/src/Symfony/Contracts/Deprecation/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/Deprecation/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/EventDispatcher/.gitattributes b/src/Symfony/Contracts/EventDispatcher/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/EventDispatcher/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/HttpClient/.gitattributes b/src/Symfony/Contracts/HttpClient/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/HttpClient/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Service/.gitattributes b/src/Symfony/Contracts/Service/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/Service/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Translation/.gitattributes b/src/Symfony/Contracts/Translation/.gitattributes
new file mode 100644
index 0000000000000..825312826d129
--- /dev/null
+++ b/src/Symfony/Contracts/Translation/.gitattributes
@@ -0,0 +1 @@
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }