$ git clone -n https://github.com/xcp-ng-rpms/xo-lite.git /var/lib/mock/v8.3-incoming-9216-28007/root/chroot_tmpdir/scmroot/xo-lite
Cloning into '/var/lib/mock/v8.3-incoming-9216-28007/root/chroot_tmpdir/scmroot/xo-lite'...
$ git fetch origin b7fffc89ab81196e4ae81cc597e523094741cd79:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xo-lite
 * [new ref]         b7fffc89ab81196e4ae81cc597e523094741cd79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7fffc8 Merge pull request #21 from xcp-ng-rpms/gdy-v0.14.0-2