This page describe Git-svn usefull command.

Clone SVN repository on a local git repository :

git svn clone -s <SVN-url-root>

Display SVN and Git branches :

git branch -a

Changing to SVN branch :

git checkout <SVN-branch-name>

Creating a working Git branch from current SVN branch :

git checkout -b <GIT-branch-name>

Update local SVN clone :

git svn fetch

After checkouting Git branch and updating SVN clone, merging update into Git branch:

git svn rebase