code: def _getTipArchiveURL(repo):
      ''' return a string containing a tarball url '''
      g = Github(settings.getProperty('github', 'authtoken'))
      repo = g.get_repo(repo)
      return repo.get_archive_link('tarball'f _getTipArchiveURL(repo):
      ''' return a string containing a tarball url '''
      g = Github(settings.getProperty('github', 'authtoken'))
      repo = g.get_repo(repo)
      return repo.get_archive_link('tarball')
docs: return a string containing a tarball url