I would suggest you to take http://download.fedora.redhat.com/pub/fedora/linux/core/development/SRPMS/wget-1.9.1-17.src.rpm
then look carefully at redhat patches.
I took wget-cvs as a basic, because I had an impression there were
important bug fixes there. FC folks took wget 1.9.1, applied a battery
of their patches, then tried to create their own LFS patch using my
patch as a basis. This required an extra work which unfortunately
(see https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=123524 )
did not go smoothly, but eventually it has succeeded. I do not know new bugs in FC wget-1.9.1-17.src.rpm