$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-deps /var/lib/mock/v9.0-u-ydi1-11559-29865/root/chroot_tmpdir/scmroot/xcp-ng-deps
Cloning into '/var/lib/mock/v9.0-u-ydi1-11559-29865/root/chroot_tmpdir/scmroot/xcp-ng-deps'...
$ git fetch origin c388a1d730b7159e4d25f03a965fedcd5dd5062d:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-deps
 * [new ref]         c388a1d730b7159e4d25f03a965fedcd5dd5062d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c388a1d bump release for test build