$ git clone -n https://gitee.com/wency_cn/at_1770958610.git /var/lib/mock/dist-an23-build-514425-75110/root/chroot_tmpdir/scmroot/at_1770958610
Cloning into '/var/lib/mock/dist-an23-build-514425-75110/root/chroot_tmpdir/scmroot/at_1770958610'...
$ git fetch origin 3bb8578355dd2071a493b09921895da06af9d8cd:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/at_1770958610
 * [new ref]         3bb8578355dd2071a493b09921895da06af9d8cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bb8578 Update code from upstream