$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-linstor.git /var/lib/mock/v8.3-v-linstor-testing-9572-28316/root/chroot_tmpdir/scmroot/xcp-ng-linstor
Cloning into '/var/lib/mock/v8.3-v-linstor-testing-9572-28316/root/chroot_tmpdir/scmroot/xcp-ng-linstor'...
$ git fetch origin bcfc984d83ba2cab5ae43ffac8953cb7d31ef1c5:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-linstor
 * [new ref]         bcfc984d83ba2cab5ae43ffac8953cb7d31ef1c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcfc984 Merge pull request #6 from xcp-ng-rpms/dtt-bump