一把过，github推送报错 fatal: unable to access 'https://github.com/***.git': Failed to connect to github.com port 443: Connection timed out

修改DNS！

修改DNS！

修改DNS！

大多是因为网络的原因！

vim /etc/resolv.conf

修改或添加：

nameserver 114.114.114.114

修改立即生效，先试试看！