git svn rebase chokes on this

cd ~/tmp
mkdir gitsvnrebase
cd gitsvnrebase
svnadmin create fubar-repo
svn co file:///Users/sensei/tmp/gitsvnrebase/fubar-repo fubar-wc
git svn init file:///Users/sensei/tmp/gitsvnrebase/fubar-repo fubar-git
cd fubar-git
git svn fetch
cd ../fubar-wc
echo "hello from svn" > test.txt
svn add test.txt
svn ci -m "create test.txt file"
cd ../fubar-git
git svn fetch
echo "hello from git" >> test.txt
git ci -a -m "add to txt file from git"
cd ../fubar-wc
echo "git svn rebase blows up here" > test.txt
svn ci -m "edit test.txt file"
cd ../fubar-git
git svn fetch
git svn rebase