$ git clone -n https://src.fedoraproject.org/rpms/immix.git /var/lib/mock/f40-build-2274858-55033/root/chroot_tmpdir/scmroot/immix
Cloning into '/var/lib/mock/f40-build-2274858-55033/root/chroot_tmpdir/scmroot/immix'...
$ git fetch origin 3d0a89008b57492fe93ec81c7b29b928b54e4c28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/immix
 * [new ref]         3d0a89008b57492fe93ec81c7b29b928b54e4c28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d0a890 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild