brew install 报错`fatal: Could not resolve HEAD to a revision`

想安装tree工具，执行brew install tree后收到下面报错

Updating Homebrew...
fatal: Could not resolve HEAD to a revision
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
Error: No available formula or cask with the name "tree".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...

进入到 /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core 目录下，发现只有一个git文件

在终端执行下面的指令：

cd /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core

git fetch --prune origin
git pull --rebase origin master

然后执行 brew update

完成之后，再执行 brew install tree

然后安装成功，问题解决

参考连接