$ git clone -n https://src.fedoraproject.org/rpms/rubygem-globalid.git /var/lib/mock/f40-build-2438013-60873/root/chroot_tmpdir/scmroot/rubygem-globalid
Cloning into '/var/lib/mock/f40-build-2438013-60873/root/chroot_tmpdir/scmroot/rubygem-globalid'...
$ git fetch origin b25a67dc86ba637541d1c856cb9b1971239c3959:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-globalid
 * [new ref]         b25a67dc86ba637541d1c856cb9b1971239c3959 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b25a67d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild