def archive_repo(self, repo: Repository.Repository, repo_path: str, operation: str) -> Optional[str]:
        """Clone and pull repos based on the operation passed.

        We return the name of the repo if its git operation fails, otherwise return None.
        """
        logger = woodchips.get(LOGGER_NAME)
        failed_repo = None
        full_repo_name = os.path.join(repo.owner.login, repo.name)  # We use a path here to properly remove failed dirs

        if (os.path.exists(repo_path) and operation == CLONE_OPERATION) or (
            not os.path.exists(repo_path) and operation == PULL_OPERATION
        ):
            pass
        else:
            commands = {
                PULL_OPERATION: ['git', '-C', repo_path, 'pull', '--rebase'],
            }

            if self.use_https:
                commands.update({CLONE_OPERATION: ['git', 'clone', repo.html_url, repo_path]})
            else:
                commands.update({CLONE_OPERATION: ['git', 'clone', repo.ssh_url, repo_path]})

            git_command = commands[operation]

            try:
                subprocess.run(
                    git_command,
                    stdout=subprocess.DEVNULL,
                    stdin=subprocess.DEVNULL,
                    stderr=subprocess.DEVNULL,
                    check=True,
                    timeout=self.timeout,
                )
                logger.info(f'Repo: {full_repo_name} {operation} success!')
            except subprocess.TimeoutExpired:
                logger.error(f'Git operation timed out archiving {repo.name}.')
                failed_repo = full_repo_name
            except subprocess.CalledProcessError as error:
                logger.error(f'Failed to {operation} {repo.name}\n{error}')
                failed_repo = full_repo_name

        return failed_repo