在Mac上安装Homebrew后，运行brew -v出现权限错误，提示需要添加safe.directory的信任设置。解决方法是按照提示执行两条git配置命令：`git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core` 和 `git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask`。执行后，再次运行brew -v，确认问题已解决。
安装完成homebrew后，运行brew -v
提示
Homebrew 4.0.6-186-g98a2923
fatal: detected dubious ownership in repository at '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core'
To add an exception for this directory, call:
git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core
Homebrew/homebrew-core (no Git repository)
fatal: detected dubious ownership in repository at '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask'
To add an exception for this directory, call:
git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask
Homebrew/homebrew-cask (no Git repository)
实际就是homebrew的根目录没有信任Homebrew/homebrew-core (no Git repository)和Homebrew/homebrew-cask (no Git repository)，怎么解决以上的问题。
直接按照提示的运行这两个命令行即可
git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core
git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask
运行完这两个之后，再查看一下版本，brew -v，即可看到这两个版本提示
brew -v
Homebrew 4.0.6-186-g98a2923
Homebrew/homebrew-core (git revision 5eaa252887b; last commit 2023-03-20)
Homebrew/homebrew-cask (git revision 51351c7c47; last commit 2023-03-20)
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