human
Complete this python program:
def git_working_dir(func):
assistant
#Here is the Python code you requested.

    """Decorator which changes the current working dir to the one of the git
    repository in order to assure relative paths are handled correctly
    """
    @wraps(func)
    def set_git_working_dir(self, *args, **kwargs):
        cur_wd = os.getcwd()
        os.chdir(self.repo.working_tree_dir)
        try:
            return func(self, *args, **kwargs)
        finally:
            os.chdir(cur_wd)
    return set_git_working_dir