$ git clone -n https://src.fedoraproject.org/rpms/ocaml-calendar.git /var/lib/mock/f40-build-739705-109214/root/chroot_tmpdir/scmroot/ocaml-calendar
Cloning into '/var/lib/mock/f40-build-739705-109214/root/chroot_tmpdir/scmroot/ocaml-calendar'...
$ git fetch origin 6a7e8de275f53f9ac3bc65ec563f3926aa4b9002:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-calendar
 * [new ref]         6a7e8de275f53f9ac3bc65ec563f3926aa4b9002 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a7e8de OCaml 5.1 rebuild for Fedora 40