梯子正常延迟不算严重，但在使用git push时反复出现
fatal: unable to access 'https://github.com/irvingwu5/xxxx.git/ Error in the HTTP2 framing layer
Failed to connect to github.com port 443 after 136353 ms: Connection timed out

将git的网络配置与梯子端口相同

git config --global http.proxy http://127.0.0.1:7890 

git config --global https.proxy http://127.0.0.1:7890