修改hosts文件C:\Windows\System32\drivers\etcgit
C:\Windows\System32\drivers\etc
经过https://www.ipaddress.com/分别查找github.com与github.global-ssl.fastly.net的ipgithub
https://www.ipaddress.com/
github.com
github.global-ssl.fastly.net
加入到hosts文件并刷新ipconfig /flushdns.net
ipconfig /flushdns