Yes, I hate it when I get results for that site. It also squeezes out the original github.com URL for that content from the search results, as you said, so I can't even solve it by writing an extension to hide it from search results.

Luckily the original URL is easy to recover from its URL ( https://github.com/tensorflow/tensorflow/issues/26922 in your case), so I just copy the URL from the search result and fix it up manually.