diff --git a/t/t5800-remote-helpers.sh b/t/t5800-remote-helpers.sh
index 2d2bbb7f5a..b97c130af0 100755
--- a/t/t5800-remote-helpers.sh
+++ b/t/t5800-remote-helpers.sh
@@ -138,6 +138,14 @@ test_expect_success 'push new branch by name' '
 	compare_refs clone HEAD server refs/heads/new-name
 '
 
+test_expect_failure 'push new branch with old content' '
+	(cd clone &&
+	 git checkout -b existing &&
+	 git push origin existing
+	) &&
+	compare_refs clone refs/heads/existing server refs/heads/existing
+'
+
 test_expect_failure 'push new branch with old:new refspec' '
 	(cd clone &&
 	 git push origin new-name:new-refspec