记录安装brew遇到的问题
环境：
- macOS 11.5.1
- Xcode 13.1
安装 brew
$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
执行brew update
报错brew fatal: Could not resolve HEAD to a revision
修复过程
$ brew update --verbose
$ cd path/to/homebrew/homebrew-core
$ git fetch --prune origin
$ git pull --rebase origin master
安装 openjdk
$ brew install openjdk
