$ git clone -n https://github.com/xcp-ng-rpms/xcp-featured.git /var/lib/mock/v8.3-u-pcoval2-10176-28763/root/chroot_tmpdir/scmroot/xcp-featured
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10176-28763/root/chroot_tmpdir/scmroot/xcp-featured'...
$ git fetch origin 70548bddca0d4907e83da427295a8ca7fb533ef0:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-featured
 * [new ref]         70548bddca0d4907e83da427295a8ca7fb533ef0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70548bd bump release for test build