docs: def get_pull_request(project, num, auth=False):
      """get pull request info  by number
      """
      url = "https://api.github.com/repos/{project}/pulls/{num}".format(project=project, num=num)
      if auth:
          header = make_auth_header()
      else:
          header = None
      response = requests.get(url, headers=header)
      response.raise_for_status()
      return json.loads(response.text, object_hook=Obj)