$ git clone -n https://src.fedoraproject.org/rpms/ocaml-react.git /var/lib/mock/f40-build-2057736-49124/root/chroot_tmpdir/scmroot/ocaml-react
Cloning into '/var/lib/mock/f40-build-2057736-49124/root/chroot_tmpdir/scmroot/ocaml-react'...
$ git fetch origin 5f733a27b41157cb3067bd8b2c52a39877ac0fbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-react
 * [new ref]         5f733a27b41157cb3067bd8b2c52a39877ac0fbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f733a2 OCaml 5.1.1 rebuild for Fedora 40