$ git clone -n https://src.fedoraproject.org/rpms/ocaml-bos.git /var/lib/mock/f41-build-811825-147589/root/chroot_tmpdir/scmroot/ocaml-bos
Cloning into '/var/lib/mock/f41-build-811825-147589/root/chroot_tmpdir/scmroot/ocaml-bos'...
$ git fetch origin a23749dc1f79b3649269881943119f84ed8dc61c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-bos
 * [new ref]         a23749dc1f79b3649269881943119f84ed8dc61c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a23749d OCaml 5.2.0 for Fedora 41