$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sexplib0.git /var/lib/mock/f40-build-739614-109132/root/chroot_tmpdir/scmroot/ocaml-sexplib0
Cloning into '/var/lib/mock/f40-build-739614-109132/root/chroot_tmpdir/scmroot/ocaml-sexplib0'...
$ git fetch origin f8b4e012eacb125ca18ce3b08254eaae0a6cfb95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sexplib0
 * [new ref]         f8b4e012eacb125ca18ce3b08254eaae0a6cfb95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8b4e01 OCaml 5.1 rebuild for Fedora 40