$ git clone -n https://src.fedoraproject.org/rpms/bbkeys.git /var/lib/mock/f40-build-801381-143773/root/chroot_tmpdir/scmroot/bbkeys
Cloning into '/var/lib/mock/f40-build-801381-143773/root/chroot_tmpdir/scmroot/bbkeys'...
$ git fetch origin d27d55d46a1e87407f289a559151bc3caed92a9a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bbkeys
 * [new ref]         d27d55d46a1e87407f289a559151bc3caed92a9a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d27d55d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild