$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-forms.git /var/lib/mock/f40-build-2278845-55288/root/chroot_tmpdir/scmroot/gap-pkg-forms
Cloning into '/var/lib/mock/f40-build-2278845-55288/root/chroot_tmpdir/scmroot/gap-pkg-forms'...
$ git fetch origin 210518f3921491fd09f33b57de3844b9734cdcb7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-forms
 * [new ref]         210518f3921491fd09f33b57de3844b9734cdcb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 210518f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild