test_expect_success REFFILES 'log diagnoses bogus HEAD symref' '
git init empty &&
- echo "ref: refs/heads/invalid.lock" > empty/.git/HEAD &&
+ test-tool -C empty ref-store main create-symref HEAD refs/heads/invalid.lock &&
test_must_fail git -C empty log 2>stderr &&
test_i18ngrep broken stderr &&
test_must_fail git -C empty log --default totally-bogus 2>stderr &&