This collection of data files is being shared with you through Arvados. You can download individual files listed below. To download the entire directory tree with wget, try:
$ wget --mirror --no-parent --no-host --cut-dirs=3 https://collections.ac2it.arvadosapi.com/c=eddaf802f9f889014e20743c510eb62c-3577/_/arv-stage/
