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
Writing to 'defaults' won't work for Xcode 5. Newer version of Xcode ship with it's own SVN binary located in:
/Applications/Xcode.app/Contents/Developer/usr/bin/
You need to replace this binary to upgrade Xcode's SVN client to 1.8. Assuming your new SVN client is located in /usr/local/bin/ (default brew install path) type the following in a terminal:
cd /Applications/Xcode.app/Contents/Developer/usr/bin/
sudo mv ./svn ./svn.org
sudo mv ./svnadmin ./svnadmin.org
sudo mv ./svndumpfilter ./svndumpfilter.org
sudo mv ./svnlook ./svnlook.org
sudo mv ./svnrdump ./svnrdump.org
sudo mv ./svnserve ./svnserve.org
sudo mv ./svnsync ./svnsync.org
sudo mv ./svnversion ./svnversion.org
sudo ln -Ff /usr/local/bin/svn svn
sudo ln -Ff /usr/local/bin/svnadmin svnadmin
sudo ln -Ff /usr/local/bin/svndumpfilter svndumpfilter
sudo ln -Ff /usr/local/bin/svnlook svnlook
sudo ln -Ff /usr/local/bin/svnrdump svnrdump
sudo ln -Ff /usr/local/bin/svnserve svnserve
sudo ln -Ff /usr/local/bin/svnsync svnsync
sudo ln -Ff /usr/local/bin/svnversion svnversion
I did this with Xcode 5.1 and SVN 1.8.8, haven't had any problems at all.