按照下列链接里的方法卸载homebrew 遇到 Failed to connect to raw.githubusercontent.com:443
https://stackoverflow.com/questions/11038028/what-is-the-best-safest-way-to-reinstall-homebrew
解决方法：https://www.jianshu.com/p/c2e829027b0a， 我用的是链接里面的方法二
之后就可以卸载重装了
另外如果brew速度慢，考虑更换为中国科大或者清华大学的下载源
替换brew.git:
$ cd "$(brew --repo)"
中国科大:
$ git remote set-url origin https://mirrors.ustc.edu.cn/brew.git
清华大学:
$ git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
替换homebrew-core.git:
$ cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
中国科大:
$ git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
清华大学:
$ git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
替换homebrew-bottles:
中国科大:
$ echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.ustc.edu.cn/homebrew-bottles' >> ~/.bash_profile
$ source ~/.bash_profile
清华大学:
$ echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles' >> ~/.bash_profile
$ source ~/.bash_profile
应用生效:
$ brew update
如果需要重置为官方源， 使用如下方法
重置brew.git:
$ cd "$(brew --repo)"
$ git remote set-url origin https://github.com/Homebrew/brew.git
重置homebrew-core.git:
$ cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
$ git remote set-url origin https://github.com/Homebrew/homebrew-core.git