code: def fetch_date_of_tag(self, tag):
          
  
          if self.options.verbose > 1:
              print("\tFetching date for tag {}".format(tag["name"]))
          gh = self.github
          user = self.options.user
          repo = self.options.project
  
          rc, data = gh.repos[user][repo].git.commits[
              tag["commit"]["sha"]].get()
          if rc == 200:
              return data["committer"]["date"]
          self.raise_GitHubError(rc, data, gh.getheaders())
docs: Fetch time for tag from repository.
  
          :param dict tag: dictionary with tag information
          :rtype: str
          :return: time of specified tag as ISO date string