I updated the Subversion client on my system to 1.8.3. I did a checkout of my repository from Xcode 5\'s Source Control menu. Then in terminal
Source Control
You can set the path to XCode's subversion client by setting XCSubversionToolPath, e.g. (replace with actual svn 1.8 path):
defaults write com.apple.Xcode XCSubversionToolPath /usr/local/bin/svn