$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-deps /var/lib/mock/v9.0-u-ydi1-11558-29864/root/chroot_tmpdir/scmroot/xcp-ng-deps
Cloning into '/var/lib/mock/v9.0-u-ydi1-11558-29864/root/chroot_tmpdir/scmroot/xcp-ng-deps'...
$ git fetch origin bef5f864400765cdceaae2e0d3bae64e7b36977a:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-deps
 * [new ref]         bef5f864400765cdceaae2e0d3bae64e7b36977a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bef5f86 bump release for test build