git protocol on port 9418 is no longer supported
https://stackoverflow.com/questions/70663523/the-unauthenticated-git-protocol-on-port-9418-is-no-longer-supported
git config --global url."https://github.com/".insteadOf git://github.com/
Failed to connect to github.com port 443: Connection refused
https://blog.csdn.net/hzw2017/article/details/115409516
https://www.cnblogs.com/sochishun/p/14505669.html