hi,
I would like to give an idea.
for example there is a package
pgdg-<distro><pgrelease>-<version><subrelease>.noarch.rpm
could be generated in the repository root
pgdg-<distro>-lastest.noarch.rpm
pgdg-<distro><pgrelease>-lastest.noarch.rpm
like epel repo, because it helps to get the lastest (sub)release available
every time
thanks