To get on github you can add to your /etc/hosts:

    192.30.253.113  github.com
    151.101.32.133  assets-cdn.github.com

And it seems faster than normal right (less users).

Edit; for profile pics include:

    151.101.32.133  avatars0.githubusercontent.com
    151.101.32.133  avatars1.githubusercontent.com
    151.101.32.133  avatars2.githubusercontent.com
    151.101.32.133  avatars3.githubusercontent.com
    151.101.32.133  avatars4.githubusercontent.com
    151.101.32.133  avatars5.githubusercontent.com