$ git clone -n https://src.fedoraproject.org/rpms/ocaml-react.git /var/lib/mock/f40-build-2105222-50576/root/chroot_tmpdir/scmroot/ocaml-react
Cloning into '/var/lib/mock/f40-build-2105222-50576/root/chroot_tmpdir/scmroot/ocaml-react'...
$ git fetch origin 13d3cacfaf8bcd4cb8e4a24ee3e2233980434daf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-react
 * [new ref]         13d3cacfaf8bcd4cb8e4a24ee3e2233980434daf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13d3cac OCaml 5.1.1 + s390x code gen fix for Fedora 40