更换Homebrew镜像源

中科大源

1. 替换brew.git
   git remote set-url origin https://mirrors.ustc.edu.cn/brew.git
2. 替换homebrew-core.git
   git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
3. 更新brew
   brew update

清华源

1. 替换brew.git
   git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
2. 替换homebrew-core.git
   git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
3. 更新brew
   brew update

恢复官方源

1. 替换brew.git
   git remote set-url origin https://github.com/Homebrew/brew.git
2. 替换homebrew-core.git
   git remote set-url origin https://github.com/Homebrew/homebrew-core.git
3. 更新brew
   brew update