def cache_key(self, repo: str, branch: str, task: Task, git_repo: Repo) -> str:
return "<STR_LIT>".format(repo=self.repo_id(repo),<EOL>branch=branch,<EOL>hash=self.current_git_hash(repo, branch, git_repo),<EOL>task=task.hash)<EOL>
Returns the key used for storing results in cache.