$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-cvec.git /var/lib/mock/f40-build-797613-141419/root/chroot_tmpdir/scmroot/gap-pkg-cvec
Cloning into '/var/lib/mock/f40-build-797613-141419/root/chroot_tmpdir/scmroot/gap-pkg-cvec'...
$ git fetch origin 4db19721739d31e73b0c27bf2f5d5a99aac7e322:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-cvec
 * [new ref]         4db19721739d31e73b0c27bf2f5d5a99aac7e322 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4db1972 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild