$ git clone -n https://src.fedoraproject.org/rpms/ergo.git /var/lib/mock/f38-build-side-42-init-devel-770343-27755/root/chroot_tmpdir/scmroot/ergo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-770343-27755/root/chroot_tmpdir/scmroot/ergo'...
$ git fetch origin 204bef7edc5bf5ff7377fc066c38678691ca4019:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ergo
 * [new ref]         204bef7edc5bf5ff7377fc066c38678691ca4019 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 204bef7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild