There are 1 repository under epel-release topic.
Ansible role to install the Extra Packages for Enterprise Linux (EPEL) - Repository on RHEL/centos
This will enable the EPEL repository on your Raspberry Pi 4
Ansible role that configures Extra Packages for Enterprise Linux repository
Install epel on your system.
Sets up Epel repository on Redhat based hosts.
https://www.getpagespeed.com/server-setup/nginx/epel-powered-by-cloudflare-cdn-fix-your-sanity