From Cambridge University Caving Club - CUCC wiki
You must have an SRCF account to access the subversion repository. You can sign-up for one at https://www.srcf.ucam.org/signup/.
Checkout the repository from the srcf server using your CRSID (the bit before the `@cam' in your cambridge email address):
svn co svn+ssh://YOUR_CRSID_HERE@www.srcf.ucam.org/societies/caving/svn
This will give you a local copy of the files.
You can then edit files and check them back into the repository:
svn ci -m 'Informative log message summarising changes'
Windows users can use tortoiseSVN for a graphical interface.