title: SVN checkout new branch based on local files of old branch
body: <p>Someone branched our trunk and now I need to checkout the new branch. I already have trunk checked out locally. Since its a huge repo with GBs of files, it will take forever to checkout the new branch.</p>
  
  <p>But since very few files have changed between the trunk and the new branch, how can I just copy my local trunk, call it the branch, then svn up the differences? Thanks!</p>
  
  <p>Bonus: How to do it where I don't even have to copy trunk, just work off the differences.</p>