Ah joy ... Google is turning off its URL shortener and breaking every link that ever used it:
https://developers.googleblog.com/en/google-url-shortener-links-will-no-longer-be-available/A quick search on
lore.kernel.org:
https://lore.kernel.org/all/?q=goo.gl%2F...turns up about 19,000 messages with affected links. That's a lot of history that is going to become harder (or impossible) to find.