一、brew cask install xxx时卡住在cloning homebrew-cask
解决方法：
直接克隆Homebrew-cask镜像到本地（本地已经有brew和homebrew-core）
step1、创建Homebrew-cask库
sudo mkdir -p /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask
step2、同步Homebrew-cask库
sudo git clone https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask.git /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask
(ps：此处是清华源)
二、brew install xxx时卡住在update homebrew
解决方法：
1、contrl + c 关闭更新进程
2、替换镜像源：
替换brew.git
cd "$(brew --repo)"
git remote set-url origin https://mirrors.ustc.edu.cn/brew.git
替换homebrew-core.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
替换homebrew-cask.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-cask"
git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git
(ps：
此处是中科大源，
换成清华源修改为
https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask.git
换成阿里源修改为
https://mirrors.aliyun.com/homebrew/brew.git
https://mirrors.aliyun.com/homebrew/homebrew-core.git
https://mirrors.aliyun.com/homebrew/homebrew-cask.git
)
（ps：
若是要重置则如下：
重置brew.git
cd "$(brew --repo)"
git remote set-url origin https://github.com/Homebrew/brew.git
重置homebrew-core.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://github.com/Homebrew/homebrew-core.git
重置homebrew-cask.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-cask"
git remote set-url origin https://github.com/Homebrew/homebrew-cask.git
）
