$ git clone -n https://src.fedoraproject.org/rpms/rubygem-glu.git /var/lib/mock/f38-build-side-42-init-devel-573929-25952/root/chroot_tmpdir/scmroot/rubygem-glu
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-573929-25952/root/chroot_tmpdir/scmroot/rubygem-glu'...
$ git fetch origin cb80187d8328a1da3a4bfbbf8846b2b779e3011b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-glu
 * [new ref]         cb80187d8328a1da3a4bfbbf8846b2b779e3011b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb80187 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild