Yum repolist shows 0 packages if release server is incorrect.

Issue

• yum repolist shows no packages:

  # yum repolist
  Updating Subscription Management repositories.
  repo id                                                        repo name
  rhel-8-for-x86_64-appstream-rpms                               Red Hat Enterprise Linux 8 for x86_64 - AppStream 
  (RPMs)
  rhel-8-for-x86_64-baseos-rpms                                  Red Hat Enterprise Linux 8 for x86_64 - BaseOS 
  (RPMs)