查看当前brew源

git -C "$(brew --repo)" remote -v

修改为清华大学brew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

或者修改为中科大的源

# 替换 Homebrew
git -C "$(brew --repo)" remote set-url origin https://mirrors.ustc.edu.cn/brew.git
# 替换 Homebrew Core
git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
# 替换 Homebrew Cask
git -C "$(brew --repo homebrew/cask)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git
# 更新
brew update

如果需要还原，执行如下命令

git -C "$(brew --repo)" remote set-url origin https://github.com/Homebrew/brew.git
git -C "$(brew --repo homebrew/core)" remote set-url origin https://github.com/Homebrew/homebrew-core.git
git -C "$(brew --repo homebrew/cask)" remote set-url origin https://github.com/Homebrew/homebrew-cask.git
brew update

原文链接