Github has been hit by the same DDOs attacks and claim that the source is coming from a chinese IP.
http://blog.norsecorp.com/2015/03/27/github-hammered-by-large-scale-ddos-attack/
Edit: theres a link on the blog to watch the DDOS attacks on the DNM live. Thesource of the attacks is the same source as the attack on github
And the correlation here is what? They're happening at the same time? Hardly evidence.
According to that article it only started Friday so even that doesn't add up.