svn:externals a sub-folder of a git project

Question

Hi, is there a way to get only a part (ex: a sub-folder called /library) of a github.com project and use it in svn:externals?

What I'm doing now is

$svn pe svn:externals .
   SomeLibrary http://svn.github.com/myuser/myproject.git

But I don't want everything from the project... I need something like:

$svn pe svn:externals .
   SomeLibrary http://svn.github.com/myuser/myproject.git/library

Answer 1

Github support has just replied my question:

this isn't possible, git is an all-or-nothing affair, you can't grab just a subpath.