code: def fetch_repo_creation_date(self):
          
          gh = self.github
          user = self.options.user
          repo = self.options.project
          rc, data = gh.repos[user][repo].get()
          if rc == 200:
              return REPO_CREATED_TAG_NAME, data["created_at"]
          else:
              self.raise_GitHubError(rc, data, gh.getheaders())
          return None, None
docs: Get the creation date of the repository from GitHub.
  
          :rtype: str, str
          :return: special tag name, creation date as ISO date string