$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-let.git /var/lib/mock/f40-build-2254878-54235/root/chroot_tmpdir/scmroot/ocaml-ppx-let
Cloning into '/var/lib/mock/f40-build-2254878-54235/root/chroot_tmpdir/scmroot/ocaml-ppx-let'...
$ git fetch origin 7349786d41cb80fdcf7b5be30dffda72f4a9470f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-let
 * [new ref]         7349786d41cb80fdcf7b5be30dffda72f4a9470f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7349786 OCaml 5.1.1 + s390x code gen fix for Fedora 40