问题
Yesterday I checked out certain version of remote respository and made some change. And now I have two 'branches' in local respository, one is master, another is certain version.
However, when I try to check commit history of svn in Xcode today, I find it fails to show modified files and an alert, saying The source control operation failed because no working copy could be found. Make sure the file is in a valid working copy and try again.
It's really annoying to unable to check any detail modified code.
Is it an Xcode bug? or what should I do with my SVN?
Thanks in advance.
来源：https://stackoverflow.com/questions/32707891/xcode7-failed-to-check-modified-files-for-svn