$ git clone -n https://github.com/xcp-ng-rpms/xs-opam-repo.git /var/lib/mock/v8.3-incoming-8871-27828/root/chroot_tmpdir/scmroot/xs-opam-repo
Cloning into '/var/lib/mock/v8.3-incoming-8871-27828/root/chroot_tmpdir/scmroot/xs-opam-repo'...
$ git fetch origin d59e86eecd1892e5ba1f7b0b7103c77139ce6fa2:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xs-opam-repo
 * [new ref]         d59e86eecd1892e5ba1f7b0b7103c77139ce6fa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d59e86e Merge branch 'XS-8.3' into asv/rebase-july-2025