安装时，本人电脑情况如下：

• npm版本：7.20.6

具体安装步骤可以参考以下文章

​https://zhuanlan.zhihu.com/p/90508170 (opens new window) https://zhuanlan.zhihu.com/p/59805070 (opens new window) https://zhuanlan.zhihu.com/p/366354601 (opens new window)

使用homebrew更新node，brew update node报错如下

fatal: Could not resolve HEAD to a revision		

解决方法，步骤如下：

第一步：brew update --verbose

% brew update -verbose
Checking if we need to fetch /opt/homebrew...
Checking if we need to fetch /opt/homebrew/Library/Taps/homebrew/homebrew-cask...
Fetching /opt/homebrew...
Checking if we need to fetch /opt/homebrew/Library/Taps/homebrew/homebrew-core...
Fetching /opt/homebrew/Library/Taps/homebrew/homebrew-core...
Fetching /opt/homebrew/Library/Taps/homebrew/homebrew-cask...
fatal: unable to access 'https://github.com/Homebrew/homebrew-cask/': Failed to connect to github.com port 443: Operation timed out
Error: Fetching /opt/homebrew/Library/Taps/homebrew/homebrew-cask failed!
Updating /opt/homebrew...
Branch 'master' set up to track remote branch 'master' from 'origin'.
Switched to and reset branch 'master'
Your branch is up to date with 'origin/master'.
Switched to and reset branch 'stable'
Current branch stable is up to date.

Updating /opt/homebrew/Library/Taps/homebrew/homebrew-core...
fatal: Could not resolve HEAD to a revision

第二步：这个时候报错。打开报错路径：

cd /opt/homebrew/Library/Taps/homebrew/homebrew-core
ls -al

total 0
drwxr-xr-x   3 tyrone.lin@ui.com  admin   96  4 13 16:34 .
drwxr-xr-x   4 tyrone.lin@ui.com  admin  128  4 14 11:31 ..
drwxr-xr-x  12 tyrone.lin@ui.com  admin  384  4 14 11:44 .git

第三步：执行以下命令

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

最后，以上命令运行成功之后执行：

brew update

​

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](https://zhuanlan.zhihu.com/p/366354601)