需要更换brew源，以阿里云源示例：

cd "$(brew --repo)"
git remote set-url origin https://mirrors.aliyun.com/homebrew/brew.git

cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.aliyun.com/homebrew/homebrew-core.git

export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.aliyun.com/homebrew/homebrew-bottles/
source ~/.bash_profile

brew update

另附中科大的源：
https://mirrors.ustc.edu.cn/brew.git

https://mirrors.ustc.edu.cn/homebrew-core.git

https://mirrors.ustc.edu.cn/homebrew-bottles/