Centos install epel and install pacakge only from specific repo

 https://www.cyberciti.biz/faq/installing-rhel-epel-repo-on-centos-redhat-7-x/

https://linuxhint.com/install-epel-repository-centos/

sudo yum --disablerepo="*" --enablerepo="sng-epel" search epel

 yum --disablerepo="*" --enablerepo="sng-epel"  install epel-release.noarch