tests: missing refs/ in bare repositories (#28844)

AdamMajer · web-flow · commit 075c4c89ee28 · 2024-01-19T15:12:21.000+08:00
Git 2.43.0 will not detect a git repository as valid without refs/
subdirectory present. `git gc` cleans this up and puts it in
packed-refs. We must keep refs/ non-empty.
diff --git a/tests/gitea-repositories-meta/user2/test_commit_revert.git/refs/heads/main b/tests/gitea-repositories-meta/user2/test_commit_revert.git/refs/heads/main
@@ -0,0 +1 @@
+deebcbc752e540bab4ce3ee713d3fc8fdc35b2f7

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+deebcbc752e540bab4ce3ee713d3fc8fdc35b2f7`