By modifying the hosts file to speed up (the process can be accelerated because other CDN is shielded lead to slow access to the site)
The first step: Get the IP address of GitHub
By visiting: http: //tool.chinaz.com/dns or https://www.ipaddress.com/ get ip three websites
github.com、github.global.ssl.fastly.net、codeload.github.com
（assets-cdn.github.com 、avatars0.githubusercontent.com ）
Step two: Select the TTL value smaller fill in hosts file
hosts file path: C: \ Windows \ System32 \ drivers \ etc
(Note: modify the hosts file requires administrator privileges, can be copied to the desktop and then modified overwrite files)
151.101.109.194 github.global.ssl.fastly.net 192.30.253.113 github.com 185.199.111.153 assets-cdn.github.com 151.101.0.133 avatars0.githubusercontent.com 151.101.72.133 avatars1.githubusercontent.com 192.30.255.120 codeload.github.com
The third step: Refresh DNS
You modify the hosts will not take effect immediately, we need to flush the DNS cache
The input command linux: sudo /etc/init.d/networking restart can.
The windows method to refresh the DNS:
Open CMD
Enter ipconfig / flushdns
Then download speed will obviously be pricey when you close your browser and then access github.
Reference links:
https://blog.csdn.net/weixin_37910453/article/details/86655613
https://www.cnblogs.com/wj1998/p/10750307.html