在 C:\Windows\System32\drivers\etc 文件夹下的host文件下加入以下段落：
# GitHub Start
140.82.114.4 github.com
140.82.114.4 gist.github.com
185.199.108.153 assets-cdn.github.com
151.101.64.133 raw.githubusercontent.com
151.101.108.133 gist.githubusercontent.com
151.101.108.133 cloud.githubusercontent.com
151.101.108.133 camo.githubusercontent.com
151.101.108.133 avatars0.githubusercontent.com
151.101.108.133 avatars1.githubusercontent.com
151.101.108.133 avatars2.githubusercontent.com
151.101.108.133 avatars3.githubusercontent.com
151.101.108.133 avatars4.githubusercontent.com
151.101.108.133 avatars5.githubusercontent.com
151.101.108.133 avatars6.githubusercontent.com
151.101.108.133 avatars7.githubusercontent.com
151.101.108.133 avatars8.githubusercontent.com
# GitHub End
注意：修改文件
- 可能需要管理员身份
- 或者修改文件属性，把只读的选项去掉，再修改，保存（保险起见，修改文件属性回原来的只读文件）
打开cmd console:
执行：
ipconfig /flushdns