$ git clone -n https://github.com/xcp-ng-rpms/xo-lite.git /var/lib/mock/v8.3-incoming-9159-27982/root/chroot_tmpdir/scmroot/xo-lite
Cloning into '/var/lib/mock/v8.3-incoming-9159-27982/root/chroot_tmpdir/scmroot/xo-lite'...
$ git fetch origin 51bbf6d3fe1e89577247e71147dea0fbaf65c58e:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xo-lite
 * [new ref]         51bbf6d3fe1e89577247e71147dea0fbaf65c58e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51bbf6d Update to version 0.14.0