Add a failing test case to test_git_check_version().
@@ -121,6 +121,7 @@ def test_git_get_src_requirements(git, dist):
@pytest.mark.parametrize('ref,result', (
('5547fa909e83df8bd743d3978d6667497983a4b7', True),
('5547fa909', True),
+ ('5678', False),
('abc123', False),
('foo', False),
))
