$ git clone -n https://src.fedoraproject.org/rpms/ocaml-atd.git /var/lib/mock/f38-build-718723-96753/root/chroot_tmpdir/scmroot/ocaml-atd
Cloning into '/var/lib/mock/f38-build-718723-96753/root/chroot_tmpdir/scmroot/ocaml-atd'...
$ git fetch origin c487e66df12ec4feea5c13d22e18814cff480e83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-atd
 * [new ref]         c487e66df12ec4feea5c13d22e18814cff480e83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c487e66 Bump release and rebuild