> On irc rlb pointed me to
> https://joeyh.name/blog/entry/removing_everything_from_github/
>
> IANAL so I don't know whether it is a real problem, a hypothetical
> problem or not a problem.

I got a couple of links sent to me privately which look relevant:

 * https://news.ycombinator.com/item?id=13767373
 * https://news.ycombinator.com/item?id=13766933

(hacker threads, but from people claiming to be lawyers)

Best wishes

Mark