cocoapods安装pod setup error解决方法

重装了电脑系统，cocoapods安装过程中总会遇到各种问题，最常碰到的是pod setup （Setting up CocoaPods master repo）失败， 因为这个耗时比较长
错误提示
[!] /usr/bin/git clone https://github.com/CocoaPods/Specs.git master
Cloning into ‘master’…
error: RPC failed; curl 18 transfer closed with outstanding read data remaining
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed

解决方法：
sudo rm -fr ~/.cocoapods/repos/master
git clone https://github.com/CocoaPods/Specs.git ~/.cocoapods/repos/master
然后再pod setup