Last login: Mon Oct 16 20:44:16 on console
sungdeMacBook-Pro:~ sung$ git clone https://github.com/Sunnyyoung/WeChatTweak-macOS.git
Cloning into 'WeChatTweak-macOS'...
fatal: unable to access 'https://github.com/Sunnyyoung/WeChatTweak-macOS.git/': Failed to connect to github.com port 443: Operation timed out
sungdeMacBook-Pro:~ sung$
这是怎么回事?