$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-pv-tools.git /var/lib/mock/v8.3-incoming-9681-28404/root/chroot_tmpdir/scmroot/xcp-ng-pv-tools
Cloning into '/var/lib/mock/v8.3-incoming-9681-28404/root/chroot_tmpdir/scmroot/xcp-ng-pv-tools'...
$ git fetch origin a8d3f65166a94f9b1a6bf6f1bcc6eb488d41bec8:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-pv-tools
 * [new ref]         a8d3f65166a94f9b1a6bf6f1bcc6eb488d41bec8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8d3f65 Add patches 21 and 24