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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_container_name(self, repo: str, branch: str, git_repo: Repo):
 """ Returns the name of the container used for the repo. """

        return "arca_{}_{}_{}".format(
            self._arca.repo_id(repo),
            branch,
            self._arca.current_git_hash(repo, branch, git_repo, short=True)
        )