$ git clone -n https://src.fedoraproject.org/rpms/ocaml-merlin.git /var/lib/mock/f40-build-2265337-54597/root/chroot_tmpdir/scmroot/ocaml-merlin
Cloning into '/var/lib/mock/f40-build-2265337-54597/root/chroot_tmpdir/scmroot/ocaml-merlin'...
$ git fetch origin 1fa2add34e532ac41fcd72daf3c14740d2334c00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-merlin
 * [new ref]         1fa2add34e532ac41fcd72daf3c14740d2334c00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fa2add OCaml 5.1.1 + s390x code gen fix for Fedora 40