每当我尝试进行 git 克隆或brew 安装时，都会收到以下错误：
不确定问题是什么，我正在使用 ohmysh
==> Tapping homebrew/cask
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask'...
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Error: Failure while executing; `git clone https://github.com/Homebrew/homebrew-cask /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask` exited with 128.
Follow the instructions here:
https://github.com/Homebrew/homebrew-cask#reporting-bugs
/usr/local/Homebrew/Library/Homebrew/utils.rb:266:in `safe_system'
/usr/local/Homebrew/Library/Homebrew/tap.rb:273:in `install'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:157:in `run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:123:in `run'
/usr/local/Homebrew/Library/Homebrew/cmd/cask.rb:9:in `cask'
/usr/local/Homebrew/Library/Homebrew/brew.rb:103:in `<main>'