Add comment about the use of --force

vladaionescu · vladaionescu · commit cd4a80c086d3 · 2020-03-27T18:35:18.000-07:00
Signed-off-by: Vlad A. Ionescu &lt;vladaionescu@users.noreply.github.com&gt;
diff --git a/source/git/gitsource.go b/source/git/gitsource.go
@@ -273,7 +273,8 @@ func (gs *gitSourceHandler) Snapshot(ctx context.Context) (out cache.ImmutableRe
 		args = append(args, "origin")
 		if !isCommitSHA(ref) {
 			args = append(args, "--force", ref+":tags/"+ref)
-			// local refs are needed so they would be advertised on next fetches
+			// local refs are needed so they would be advertised on next fetches. Force is used
+			// in case the ref is a branch and it now points to a different commit sha
 			// TODO: is there a better way to do this?
 		}
 		if _, err := gitWithinDir(ctx, gitDir, "", args...); err != nil {
