I had some problem with Subversion repository because the repo is using version 1.8 but the SVN version that ships with xCode is version 1.7.
To update SVN on MacOS 10.10 you need to first uninstallĀ old version. You can do that just by deleting the binary.
Type in console:
which svn
Then remove it
sudo rm /usr/bin/svn
Use then Homebrew to install new version.
brew install svn
It takes few minutes to install.
I also had to link SVN again on homebrew (maybe i had some old references)
brew link --overwrite subversion
… and it’s done.