Copy a range of commits from svn to master. Useful when someone checks in into svn and those changes are pulled into the svn branch via 'git svn rebase'.
$ git format-patch from..to --stdout --full-index -k | grep -v 'git-svn-id: svn+ssh://dev.eclipse.org/svnroot/technology/' | git am -k -3

Check in changes into svn.
$ git branch -D svn; git co -b svn; git svn rebase; git svn dcommit