I have renamed the rpm-retrieve.pl script to spectool and put it up on:
http://people.redhat.com/nphilipp/spectool
The biggest change is, it understands --help now and is version 1.0.
For those who missed the great "why macros in Source fields are evil/bring world peace" thread on fedora-devel-list, this tool expands macros source/patch directives and either lists them or directly retrieves the files.
-- Aleksey Nogin
Home Page: http://nogin.org/ E-Mail: nogin cs caltech edu (office), aleksey nogin org (personal) Office: Jorgensen 70, tel: (626) 395-2907