$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-grpconst.git /var/lib/mock/f40-build-2278889-55292/root/chroot_tmpdir/scmroot/gap-pkg-grpconst
Cloning into '/var/lib/mock/f40-build-2278889-55292/root/chroot_tmpdir/scmroot/gap-pkg-grpconst'...
$ git fetch origin 8a4895921084f6a0b7b3348208d4c544b39b27e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-grpconst
 * [new ref]         8a4895921084f6a0b7b3348208d4c544b39b27e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a48959 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild