unversioned upstream source

Hello, I am seeking advice, or even better guidelines on the issue of unversionned upstream source. There is a dispute which may be seen here: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=197488 The upstream tarball is unversioned, I would like to add the timestamp to the tarball name to avoid having different tarballs with the same name, in case upstream wants to do a newer release without modifying the tarball name. This leads to: %define stamp 19981218 Source0: uread-%{stamp}.tar.gz # unversioned upstream source, downloaded with wget -N # renamed to uread-YYYYMMDD.tar.gz #Source0: http://www.engineers.auckland.ac.nz/~snor007/src/uread.tar.gz Jochen objects to that, saying that the Source should be downloadable, like Source0: http://www.engineers.auckland.ac.nz/~snor007/src/uread.tar.gz What do you think about that issue? What do you think is best practice and why? -- Pat