Even if a model is sourced from Google Warehouse, you only have the assurance that someone agreed to their terms, and not that Google Warehouse has done any due diligence at all. You are using any content from Google Warehouse at your own risk - they could be served with a DMCA takedown notice at any time. If THEY pull it down, its possible they will get safe harbor. Reposters do not get that protection.

You should never repost something unless you have are 100% sure you have the right to do so. Google is not warranting your rights at all.