我是这样解决这个问题的:

rm -fr ~/Library/Caches/CocoaPods && \
gem update --system && \
gem update && \
gem cleanup && \
pod setup

参考:http://blog.cocoapods.org/Repairing-Our-Broken-Specs-Repository/

我也有同样的问题，然后我意识到我仍然在“非常糟糕的网络”上运行网络调节器。把它关掉就解决了问题。

希望这能帮助到别人。

我找到了另一种解决问题的方法

Pod安装——冗长——不重新更新

这对我很管用。

我也遇到了同样的问题，我通过运行下面给出的命令来解决它

pod repo remove master
pod setup
pod install

找到了另一种下载cocoapods的方法，就是下载这里提供的快照之一。它有点旧，但是.bz2压缩文件下载起来要快得多。一旦我下载了它，我将它复制到~/。cocoapods/repos/然后我使用bzip2 -dk *.bz2解压缩它。

解压缩需要一段时间，完成后，我将新解压缩文件的扩展名更改为.tar，并执行tar xvf *.tar来解压缩。这将显示正在创建的文件列表，也需要一段时间。

Finally when I ran pod repo list while inside the project folder, it showed the master folder had been added as a repo. Because I still kept getting an error that it was unable to find the specification for the pod I was looking for, I went to the master folder and did git fetch and then git merge. The git fetch took the longest, about an hour at 50 KB/s. I used fetch and merge instead of pull, as I was having issues with it, i.e. fatal: the remote end hung up unexpectedly. It is now up to date and I was able to get the pod I wanted.

有时也发生在我身上，我只是:

pod clean
pod update --verbose