Mine

# Init repository

    url=https://gateau@svn.kde.org/home/kde/branches/extragear/kde3/libs
    svn info $url
    ...
    Last Changed Rev : 671034
    ...

    mkdir libs
    cd libs
    git-svn init $url
    # Use the value of "Last Changed Rev", do not use -rHEAD 
    git-svn fetch -r671034
    git-svn fetch

# Hack

    git-status
    git-diff
    git-commit -a
    git-checkout some/file (<=> svn revert some/file)

# Update from svn

    git-svn rebase

# Commit to svn

    git-svn dcommit