fatal: unable to access 'https://github.com/Homebrew/brew/': Failed to connect to github.com port 443 after 75025 ms: Couldn't connect to server

国内源问题，各种方法都试了都不行，很奇怪。
终于找到了一种方法，亲测可行：

/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)"