$ git clone -n https://gitee.com/wenyuzifang/libmetalink.git /var/lib/mock/dist-an23-build-482713-74272/root/chroot_tmpdir/scmroot/libmetalink
Cloning into '/var/lib/mock/dist-an23-build-482713-74272/root/chroot_tmpdir/scmroot/libmetalink'...
$ git fetch origin c123edfef8838c8d0921ac020ecd19cf368237e8:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libmetalink
 * [new ref]         c123edfef8838c8d0921ac020ecd19cf368237e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c123edf Update code from upstream