How to change username and password in git-svn?
Git actually doesn’t store your SVN credentials. This is actually stored by the SVN client itself. You can find this by browsing to the ‘.subversion’ folder, which can be found under your home directory (cd $HOME/.subversion). Under this directory, delete all the contents of the ‘auth’ folder. The next time you do a rebase, git-svn should prompt you for a password. Just cancel this, and it should prompt you for the username, thereby allowing you to change your credentials.
PS – If you bother browsing through the ‘auth’ folder, you’ll find a couple of weirdly named files, that contain your SVN credentials in plain text!