downloading just a patch file from google code

[William Stein]

Hi PSage Devs,

I'm curious if anybody knows how to download a *patch file* from
Google code for a particular changeset (or if it is possible).
For example, I want to download this as a patch:

http://code.google.com/r/jwbober-psage/source/detail?r=5ee024f1cda8f7d2b1c5d851eb95686bbb4fd655

However, it seems the only way to get that change as a patch is to
check out the whole repository to a directory on my computer, then
export a patch.

-- William

--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org