How to solve SSL certificate problem with git-svn

If the above does not work there's another option noted in this SO post whereby you can change the permissions recursively on ~/.subversion/auth. This is done by doing "chmod -R 777 ~/.subversion/auth". If this doesn't work then your last port of call will be to delete ~/.subversion/auth/svn.ssl.server and then you'll probably need to carry out the first step I mentioned so as to accept the re-issued certificate permanently.

It's basically because you need to re-issue the certificate. Hopefully that helps, if not, feel free to ask more questions.