$ git clone -n https://src.fedoraproject.org/rpms/ocaml-omd.git /var/lib/mock/f42-build-3375766-45070/root/chroot_tmpdir/scmroot/ocaml-omd
Cloning into '/var/lib/mock/f42-build-3375766-45070/root/chroot_tmpdir/scmroot/ocaml-omd'...
$ git fetch origin e9850aa41758a4bff6e2f572f341a004fa3cdd37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-omd
 * [new ref]         e9850aa41758a4bff6e2f572f341a004fa3cdd37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9850aa Version 1.3.2