Honestly, I figure that being on the front page of Hacker News like this is more than shame enough to get a human from the common sense department to read and respond to the email I sent politely asking them to stop scraping my git server. If I don't get a response by next Tuesday, I'm getting a lawyer to write a formal cease and desist letter.
No one gives a fuck in this industry until someone turns up with bigger lawyers. This is behaviour which is written off with no ethical concerns as ok until that bigger fish comes along.