Looks like it's a DDOS attack. I'm guessing the attackers figured out that there's a lot processing is required to generate a repo download (and thus using it a

Looks like it's a DDOS attack. I'm guessing the attackers figured out that there's a lot processing is required to generate a repo download (and thus using it as a L7 attack). I'm surprised that the downloads aren't cached. Maybe the attackers are using cache busting or similar to bypass it.