Reports are that Homebrew is affected:

https://nitter.net/micahflee/status/1319750021319852032#m

They can't claw it back though!! That's why I just ran the update && upgrade to make sure I have the latest

I don't know. Micah's pretty reliable though.

Any recent Homebrew commits?

now i'm super glad that i ran it when i did, as it must have been before it got pulled. it updated without issue. i also followed the Micah provided to download the source. you know, just in case.