correct usage help string for git-hash-object

diff --git a/t/t7504-commit-msg-hook.sh b/t/t7504-commit-msg-hook.sh
index 88577af9535b5ed7027ec2b6b752df3b78d7bab4..47680e6df41c2bc14f23514b010a8aefb3fedcd7 100755 (executable)
--- a/t/t7504-commit-msg-hook.sh
+++ b/t/t7504-commit-msg-hook.sh
@@ -105,7 +105,7 @@ test_expect_success 'with failing hook' '
 
        echo "another" >> file &&
        git add file &&
-       ! git commit -m "another"
+       test_must_fail git commit -m "another"
 
 '