[CentOS] reinstall packages

I have some rpm packages that I built locally.  After installing and
configuring them, I found a problem that required a source patch.  I
have rebuilt the rpms, but since they have the same version number as
the original, I can't use "yum localupdate" to install them.  Is there
a clean way to do this with yum, or do I just need to remove the old
packages and then install the new ones?

-- 
Bowie