homebrew无法更新，我无法添加git存储库

Question

和标题上说的差不多。我正在尝试使用以下命令更新自制软件

brew update

并且我总是收到错误消息

$ brew update
fatal: Not a git repository (or any of the parent directories): .git
fatal: Not a git repository (or any of the parent directories): .git
Error: Failure while executing: git checkout -q master

brew doctor命令输出如下所示：

$ brew doctor
Warning: Missing git origin remote.

Without a correctly configured origin, Homebrew won't update
properly. You can solve this by adding the Homebrew remote:
  cd /usr/local
  git remote add origin https://github.com/Homebrew/homebrew.git
fatal: Not a git repository (or any of the parent directories): .git

当我跑的时候

cd /usr/local
git remote add origin https://github.com/Homebrew/homebrew.git

我得到了

$ cd /usr/local
$ git remote add origin https://github.com/Homebrew/homebrew.git
fatal: Not a git repository (or any of the parent directories): .git

我能做些什么来摆脱这个问题呢？git似乎不能识别自制的存储库，我应该使用什么来代替这个建议的存储库呢？

Answer 1

我也遇到了同样的问题，只需使用以下命令在一个临时位置克隆homebrew存储库

git clone https://github.com/Homebrew/homebrew.git

并将生成的本地目录移动到/usr/ .git，覆盖那里已有的目录。在那之后，我必须签出一些目录：

cd /usr/local
git checkout Library/Formula/
git checkout Library/Contributions/
git checkout Library/ENV/
git checkout Library/Homebrew/