def __missing__(self, key):
        if self.default_factory is None:
            raise KeyError(key)
        else:
            ret = self[key] = self.default_factory(name=key)
            return ret
def clone_results_repo(dest_dir):
    subprocess.check_call(
        ["git", "clone", "https://github.com/elopio/autopkgtest-results.git", dest_dir]
    )