$ git clone -n https://src.fedoraproject.org/rpms/ocaml-mtime.git /var/lib/mock/f42-build-865613-173358/root/chroot_tmpdir/scmroot/ocaml-mtime
Cloning into '/var/lib/mock/f42-build-865613-173358/root/chroot_tmpdir/scmroot/ocaml-mtime'...
$ git fetch origin e113953ca54b345068650a5cb44dbeb1c755edc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-mtime
 * [new ref]         e113953ca54b345068650a5cb44dbeb1c755edc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e113953 OCaml 5.3.0 rebuild for Fedora 42