$ git clone -n https://src.fedoraproject.org/rpms/ocaml-crunch.git /var/lib/mock/f42-build-865648-173376/root/chroot_tmpdir/scmroot/ocaml-crunch
Cloning into '/var/lib/mock/f42-build-865648-173376/root/chroot_tmpdir/scmroot/ocaml-crunch'...
$ git fetch origin 09ae8f470aeb0cbf357d28f175753ae0c3c1602e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-crunch
 * [new ref]         09ae8f470aeb0cbf357d28f175753ae0c3c1602e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09ae8f4 OCaml 5.3.0 rebuild for Fedora 42