1. Proposed title of this feature request: {}{}Speed up oc-mirror plugin commands.
2. What is the nature and description of the request?: This request will help with the adoption of oc-mirror plugin and improve UX.
3. Why does the customer need this? (List the business requirements here): oc-mirror plugin is great, but commands take quite some time to finish. On the minutes order of magnitude. This make the UX terrible for many customers. They complain about it. Sometimes they even cancel the commands because thy think the command is hang. 

time oc mirror list operators --catalogs --version=4.13
Available OpenShift OperatorHub catalogs:
OpenShift 4.13:
registry.redhat.io/redhat/redhat-operator-index:v4.13
registry.redhat.io/redhat/certified-operator-index:v4.13
registry.redhat.io/redhat/community-operator-index:v4.13
registry.redhat.io/redhat/redhat-marketplace-index:v4.13

real    3m7.334s
user    0m0.248s
sys     0m0.106s 

      4. List any affected packages or components: oc-mirror plugin.