[CentOS] repoquery -f does not work well.

Hi.

I've found inconstancy between output of repoquery and rpm. I was 
looking forward towards apache php 5.4 module which must provided by 
some package SCL (can someone tell me?).

rpm -qf /etc/httpd/modules/mod_proxy.so
httpd-2.2.15-29.el6.centos.x86_64
repoquery -qf /etc/httpd/modules/mod_proxy.so

so repoquery results in no output

yum list installed httpd
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
  * c6-media:
Installed Packages
httpd.x86_64 2.2.15-29.el6.centos @c6-media

repoquery -qa httpd
httpd-0:2.2.15-29.el6.centos.x86_64

No wonder libphp5.so results in no output.