code: def _write_master_branch_resource(self, content, fn, commit_msg, is_json=False):
          
          # TODO: we might want this to push, but currently it is only called in contexts in which
          # we are about to push anyway (document creation)
          with self._master_branch_repo_lock:
              ga = self._create_git_action_for_global_resource()
              with ga.lock():
                  ga.checkout_master()
                  if is_json:
                      write_as_json(content, fn)
                  else:
                      write_to_filepath(content, fn)
                  ga._add_and_commit(fn, self._infrastructure_commit_author, commit_msg)
docs: This will force the current branch to master!