$ git clone -n https://src.fedoraproject.org/rpms/ocaml-rresult.git /var/lib/mock/f40-build-2201443-51830/root/chroot_tmpdir/scmroot/ocaml-rresult
Cloning into '/var/lib/mock/f40-build-2201443-51830/root/chroot_tmpdir/scmroot/ocaml-rresult'...
$ git fetch origin 0fa5b3003b5dc18adcff7dd02210b2ed0567ddab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-rresult
 * [new ref]         0fa5b3003b5dc18adcff7dd02210b2ed0567ddab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fa5b30 OCaml 5.1.1 + s390x code gen fix for Fedora 40