$ git clone -n https://src.fedoraproject.org/rpms/ggz-base-libs.git /var/lib/mock/f40-build-801932-143890/root/chroot_tmpdir/scmroot/ggz-base-libs
Cloning into '/var/lib/mock/f40-build-801932-143890/root/chroot_tmpdir/scmroot/ggz-base-libs'...
$ git fetch origin d51bcbbb32d91ccf284fda23df3e8e27df6f9fee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ggz-base-libs
 * [new ref]         d51bcbbb32d91ccf284fda23df3e8e27df6f9fee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d51bcbb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild