$ git clone -n https://src.fedoraproject.org/rpms/ocaml-mew.git /var/lib/mock/f40-build-2097204-50427/root/chroot_tmpdir/scmroot/ocaml-mew
Cloning into '/var/lib/mock/f40-build-2097204-50427/root/chroot_tmpdir/scmroot/ocaml-mew'...
$ git fetch origin 66157af4c01434ec120d67500e28763df0ba1944:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-mew
 * [new ref]         66157af4c01434ec120d67500e28763df0ba1944 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66157af OCaml 5.1.1 + s390x code gen fix for Fedora 40