CocoaPods执行 pod setup 遇到的问题

$ pod setup
Setting up CocoaPods master repo
fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
  $ /usr/local/bin/git -C /Users/sunke/.cocoapods/repos/master fetch origin
  --progress
  fatal: 'origin' does not appear to be a git repository
  fatal: Could not read from remote repository.
  
  Please make sure you have the correct access rights
  and the repository exists.
[!] CocoaPods was not able to update the `master` repo. If this is an unexpected issue and persists you can inspect it running `pod repo update --verbose

解决:
安装后，还是有问题，说不能设置环境，之后按照这提示运行了

pod repo update --verbose 

但是依然不行。

之后试了下加sudo

sudo pod setup

Password:

/usr/local/lib/ruby/gems/2.3.0/gems/claide-1.0.2/lib/claide/command.rb:439:in `help!':[!] You cannot run CocoaPods as root. (CLAide::Help)

这里看到关键问题了，You cannot run CocoaPods as root 这就好办了。

只要先删除之前的目录：

sudo rm -fr ~/.cocoapods/repos/master

这个时间可能有点长，因为里面有好几百兆的文件呢，等他删除完毕在运行

pod setup

之后就是下载最新的东西了，输出如下：

$ pod setup

Setting up CocoaPods master repo

  $ /usr/local/bin/git clone https://github.com/CocoaPods/Specs.git master

  --progress

  Cloning into 'master'...

  remote: Counting objects: 1631882, done.       

  remote: Compressing objects: 100% (334/334), done.       

  remote: Total 1631882 (delta 140), reused 35 (delta 35), pack-reused 1631505       

  Receiving objects: 100% (1631882/1631882), 435.48 MiB | 1.47 MiB/s, done.

  Resolving deltas: 100% (869406/869406), done.

  Checking connectivity... done.

  Checking out files: 100% (191990/191990), done.


CocoaPods 1.4.0.beta.2 is available.

To update use: `sudo gem install cocoapods --pre`

[!] This is a test version we'd love you to try.


For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.4.0.beta.2


Setup completed

这里会很慢，因为要下载很多东西，慢慢等吧~