rename_ref: replace empty message in HEAD's log

diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 8a833f354e331966f5f927ae94ac8686dd6d166f..47bc1512804ec24dcb9ea6a930900ca2202cdf38 100755 (executable)
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -139,6 +139,11 @@ test_expect_success 'git branch -M baz bam should succeed when baz is checked ou
        test $(git rev-parse --abbrev-ref HEAD) = bam
 '
 
+test_expect_success 'git branch -M baz bam should add entry to .git/logs/HEAD' '
+       msg="Branch: renamed refs/heads/baz to refs/heads/bam" &&
+       grep " 0\{40\}.*$msg$" .git/logs/HEAD
+'
+
 test_expect_success 'git branch -M baz bam should succeed when baz is checked out as linked working tree' '
        git checkout master &&
        git worktree add -b baz bazdir &&