$ git clone -n https://src.fedoraproject.org/rpms/darktable.git /var/lib/mock/f41-build-side-1-2646028-27211/root/chroot_tmpdir/scmroot/darktable
Cloning into '/var/lib/mock/f41-build-side-1-2646028-27211/root/chroot_tmpdir/scmroot/darktable'...
$ git fetch origin 734c684c0d119c366f99bd3a6115899570097e28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/darktable
 * [new ref]         734c684c0d119c366f99bd3a6115899570097e28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 734c684 Update to 4.8.1