$ git clone -n https://github.com/xcp-ng-rpms/sm.git /var/lib/mock/v9.0-u-ydi1-11244-29604/root/chroot_tmpdir/scmroot/sm
Cloning into '/var/lib/mock/v9.0-u-ydi1-11244-29604/root/chroot_tmpdir/scmroot/sm'...
$ git fetch origin b25da118099b7202dc6db291d8d28602695c5a8f:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/sm
 * [new ref]         b25da118099b7202dc6db291d8d28602695c5a8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b25da11 bump release for test build