I kept getting the following message when I tried running svn commands on my computer. I tried to accept the certificate permanently with no luck:

Error validating server certificate for 'https://subversion.assembla.com:443':
 - The certificate is not issued by a trusted authority. Use the
   fingerprint to validate the certificate manually!
Certificate information:
 - Hostname: *.assembla.com
 - Valid: from Wed, 16 Apr 2014 13:31:17 GMT until Thu, 24 Mar 2016 19:30:40 GMT
 - Issuer: http://certs.godaddy.com/repository/, GoDaddy.com, Inc., Scottsdale, Arizona, US
 - Fingerprint: ec:9f:9d:b2:39:e1:34:81:7b:27:f6:51:30:8b:ac:41:5b:62:09:19
(R)eject, accept (t)emporarily or accept (p)ermanently?

I noticed that the subversion files were owned by the root user when inspecting the files on my computer. I’m not sure how this happened but it can easily be fixed with the chown command.

sudo chown -R $(whoami) ~$(whoami)/.subversion