What I actually did for was:
cd /path/to/svn/repo
svn diff -r 125 > /tmp/patch.diff
cd /path/to/git/repo
patch -p0 < /tmp/patch.diff
What I actually did for was:
cd /path/to/svn/repo
svn diff -r 125 > /tmp/patch.diff
cd /path/to/git/repo
patch -p0 < /tmp/patch.diff