HOw to determine the URL for BigFix site Patches for RHEL 7

While preparing my BigFix server to retrieve patches for Linux Servers, I need to verify the URL for Sites such as Patches for RHEL 7. The documentation has identified that the site Patches for CentOS 6 Plugin R2 is linked to http://mirror.centos.org/centos/6/updates/x86_64/. I’ve identified several Channel URL’s being used by Spacewalk in my organization and I will configure BigFix to pull either fixlets or patches from these sites. How do I located the associated URL’s with existing BgFix content sites? Thank you