That would seem to warrant a title change for clarity by itself, but the article being referenced by this submission also clearly says (the and submission URL slug even says) "Github Gentoo organization hacked".
Which is odd, because I first noted in my comment that it might have changed, then I noticed the article slug HN had matched the page title at the time I was commenting, so I edited it to note that instead. I figured if the article slug used that wording, it was likely the title at posting time, and it was unlikely to have changed and changed back, but I guess either that happened, or HN updates links when it finds permanent redirects (assuming an old URL exists and redirects).
As mentioned by wtallis, this is a Github only problem. Gentoo hosts their own infra, with the Github org being nothing more than a downstream mirror.