$ git clone -n https://gitee.com/wanghuan158/mutter.git /var/lib/mock/dist-an23.2-build-429638-73034/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/dist-an23.2-build-429638-73034/root/chroot_tmpdir/scmroot/mutter'...
$ git fetch origin b2245ebebac1734486947421001bb1e08dcddc56:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/mutter
 * [new ref]         b2245ebebac1734486947421001bb1e08dcddc56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2245eb update mutter.spec.