This is sending email notifications to github users tagged by username. The link seems to just go to gitlab for now, not sure what the deal is with that.

The email bait is crypto wallet related.

Link has been taken down by Github since being reported.

Archive:

https://archive.md/5tlLi

Related [1]. There are a few links.

[1] - https://news.ycombinator.com/item?id=45352610

Also got it, found this thread by googling "ycombiinator"

I got one with a slightly different misspelling of ycombinator. Luckily it seems like GitHub is on top of it.