$ git clone -n https://gitee.com/wenyuzifang/tang.git /var/lib/mock/dist-an23-build-481749-74252/root/chroot_tmpdir/scmroot/tang
Cloning into '/var/lib/mock/dist-an23-build-481749-74252/root/chroot_tmpdir/scmroot/tang'...
$ git fetch origin 83541b24516ca78e40b697c49375497f3e759bdb:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tang
 * [new ref]         83541b24516ca78e40b697c49375497f3e759bdb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83541b2 Update code from upstream