$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-custom-printf.git /var/lib/mock/f40-build-2265353-54598/root/chroot_tmpdir/scmroot/ocaml-ppx-custom-printf
Cloning into '/var/lib/mock/f40-build-2265353-54598/root/chroot_tmpdir/scmroot/ocaml-ppx-custom-printf'...
$ git fetch origin 849f3f88a4cf96765b8923a746831b97f6a29463:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-custom-printf
 * [new ref]         849f3f88a4cf96765b8923a746831b97f6a29463 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 849f3f8 OCaml 5.1.1 + s390x code gen fix for Fedora 40