$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-custom-printf.git /var/lib/mock/f42-build-865838-173538/root/chroot_tmpdir/scmroot/ocaml-ppx-custom-printf
Cloning into '/var/lib/mock/f42-build-865838-173538/root/chroot_tmpdir/scmroot/ocaml-ppx-custom-printf'...
$ git fetch origin bd6bd7f3f0bcc83cc018492548e7d2e620b74b95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-custom-printf
 * [new ref]         bd6bd7f3f0bcc83cc018492548e7d2e620b74b95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd6bd7f OCaml 5.3.0 rebuild for Fedora 42