human
Solve the following python programming problem given the following code:
def _change_test_package_version(script, version_pkg_path) : 
    version_pkg_path.join ('version_pkg.py').write (textwrap.dedent ('        def main():
            print("some different version")')) 
    script.run ('git', 'clean', '-qfdx', cwd = script, expect_stderr = True) 
    script.run ('git', 'commit', '-q', '--author', 'pip <pypa-dev@googlegroups.com>', '-am', 'messed version', cwd = version_pkg_path, expect_stderr = True) 

    
    

    Fix the buggy line: script.run ('git', 'clean', '-qfdx', cwd = script, expect_stderr = True)
assistant
#Here is Python program to fix the buggy line: script.

script.run ('git', 'clean', '-qfdx', cwd = version_pkg_path, expect_stderr = True)