$ git clone -n https://src.fedoraproject.org/rpms/bes.git /var/lib/mock/f38-build-side-42-init-devel-631503-26379/root/chroot_tmpdir/scmroot/bes
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-631503-26379/root/chroot_tmpdir/scmroot/bes'...
$ git fetch origin 07637ab8387e29d3e66de0ab6f5dc91f7dadbd11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bes
 * [new ref]         07637ab8387e29d3e66de0ab6f5dc91f7dadbd11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07637ab Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild