$ git clone -n https://gitee.com/wenyuzifang/tftp.git /var/lib/mock/dist-an23-build-486874-74383/root/chroot_tmpdir/scmroot/tftp
Cloning into '/var/lib/mock/dist-an23-build-486874-74383/root/chroot_tmpdir/scmroot/tftp'...
$ git fetch origin b3d626630631f8bbfead2b2f7d05acd6bc0e0bc4:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tftp
 * [new ref]         b3d626630631f8bbfead2b2f7d05acd6bc0e0bc4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3d6266 Update code from upstream