Homebrew 致命：需要一个修订版（MacOs Sierra）答案

【问题标题】：Homebrew fatal: needed a single revision (MacOs Sierra)Homebrew 致命：需要一个修订版（MacOs Sierra）
【发布时间】：2017-01-29 21:37:22
【问题描述】：

不确定这个问题是否与升级到 MacOs Sierra 有关，但从那一刻起，当我运行“brew update”时就会出现这个错误

→ brew update
Checking out v1.0.0 in /usr/local/Homebrew/Library/Taps/caskroom/homebrew-cask...
To checkout master in /usr/local/Homebrew/Library/Taps/caskroom/homebrew-cask run:
  'cd /usr/local/Homebrew/Library/Taps/caskroom/homebrew-cask && git checkout master
fatal: Cannot update paths and switch to branch 'v1.0.0' at the same time.
Did you intend to checkout 'refs/tags/1.0.0' which can not be resolved as commit?
fatal: Needed a single revision
invalid upstream refs/tags/1.0.0
Checking out v1.0.0 in /usr/local/Homebrew/Library/Taps/dart-lang/homebrew-dart...
To checkout master in /usr/local/Homebrew/Library/Taps/dart-lang/homebrew-dart run:
  'cd /usr/local/Homebrew/Library/Taps/dart-lang/homebrew-dart && git checkout master
fatal: Cannot update paths and switch to branch 'v1.0.0' at the same time.
Did you intend to checkout 'refs/tags/1.0.0' which can not be resolved as commit?
fatal: Needed a single revision
invalid upstream refs/tags/1.0.0
Checking out v1.0.0 in /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core...
To checkout master in /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core run:
  'cd /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core && git checkout master
fatal: Cannot update paths and switch to branch 'v1.0.0' at the same time.
Did you intend to checkout 'refs/tags/1.0.0' which can not be resolved as commit?
fatal: Needed a single revision
invalid upstream refs/tags/1.0.0

我试着跑了

cd $(brew --prefix) && git fetch && git reset --hard origin/master

但它给了我这个错误：

fatal: Not a git repository (or any of the parent directories): .git

【问题讨论】：

我也得到了这个，我还没有升级到 Sierra。但是我已经升级到 Brew 1.0

标签： git macos terminal homebrew iterm

【解决方案1】：

升级到 Sierra 后我遇到了同样的问题。

除了显示 Homebrew 安装路径的 brew --prefix 之外，还有 brew --repository 显示其 .git 目录所在的位置。

man brew 声称“对于标准安装，前缀和存储库是同一目录”。手册页已过期或我的安装不是“标准”，但我的 prefix 是 /usr/local 而我的 repository 是 /usr/local/Homebrew。

使用相同的命令但 cd $(brew --repository) 为我工作：

cd $(brew --repository) && git fetch && git reset --hard origin/master

【讨论】：

完整修复：cd $(brew --prefix)/Homebrew && git fetch && git reset --hard origin/master
又名brew --repository
已编辑以添加有关 brew --repository 的完整命令和信息。谢谢！
感谢@thomasd，这已经为我解决了这个问题！
Homebrew 最近（本周）从/usr/local 迁移到/usr/local/Homebrew，文档可能仍然过时。

【解决方案2】：

接受的答案对我不起作用。有效的是卸载 homebrew 并重新安装它：

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew analytics off

【讨论】：

【解决方案3】：

对我来说没什么用，我不得不卸载并重新安装 Brew：

# change to home directory to avoid other errors later
cd ~

# uninstall brew
rm -rf /usr/local/Cellar /usr/local/.git && cd ~ && brew cleanup

 # reinstall brew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

【讨论】：

【解决方案4】：

卸载


/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)"

然后重新安装。

【讨论】：

【解决方案5】：

此命令为我修复了错误：

git -C $(brew --repository homebrew/core) checkout master

【讨论】：