downloaded source has different filename

I'm not sure why, or whether this is the right fix, but the core source is downloaded by spectool as "rpmbuild/SOURCES/3e6afd8975b6ff6eb3045ba00e532d6c0e302fe6" rather than "rpmbuild/SOURCES/php-composer-1.0.0-3e6afd8975b6ff6eb3045ba00e532d6c0e302fe6.tar.gz" on my CentOS 6 system.

Thanks

Tom