$ git clone -n https://src.fedoraproject.org/rpms/ocaml-perl4caml.git /var/lib/mock/f40-build-739622-109132/root/chroot_tmpdir/scmroot/ocaml-perl4caml
Cloning into '/var/lib/mock/f40-build-739622-109132/root/chroot_tmpdir/scmroot/ocaml-perl4caml'...
$ git fetch origin a2f0d1822f98964345a4f93995492f8378808a29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-perl4caml
 * [new ref]         a2f0d1822f98964345a4f93995492f8378808a29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2f0d18 OCaml 5.1 rebuild for Fedora 40