查看镜像源

# 查看 brew.git 当前源
$ cd "$(brew --repo)" && git remote -v
origin	https://github.com/Homebrew/brew.git (fetch)
origin	https://github.com/Homebrew/brew.git (push)

# 查看 homebrew-core.git 当前源
$ cd "$(brew --repo homebrew/core)" && git remote -v
origin	https://github.com/Homebrew/homebrew-core.git (fetch)
origin	https://github.com/Homebrew/homebrew-core.git (push)

更改镜像源为清华源

git -C "$(brew --repo)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
git -C "$(brew --repo homebrew/cask)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask.git

brew update

Homebrew-bottles 镜像（影响软件下载速度）

echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles' >> ~/.bash_profile