rpm -qpi libtiff-3.5.4-1.i386.rpm says the URL for this package is:
This URL is stale. Unfortunately, the pages at that address redirects us
to an unexisting page.
Thanks for the heads-up. The new site is http://www.libtiff.org/, and the
package will reflect that starting with libtiff-3.5.4-4, which should show
up in Raw Hide this week.