$ git clone -n https://gitee.com/wency_cn/python-tornado_1770764474.git /var/lib/mock/dist-an23-build-513342-75099/root/chroot_tmpdir/scmroot/python-tornado_1770764474
Cloning into '/var/lib/mock/dist-an23-build-513342-75099/root/chroot_tmpdir/scmroot/python-tornado_1770764474'...
$ git fetch origin e2ae6ea48e570ae5fea55db0c43a22e764652f43:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-tornado_1770764474
 * [new ref]         e2ae6ea48e570ae5fea55db0c43a22e764652f43 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2ae6ea Update code from upstream