FM / vars

/etc/dnf/vars

Name	Size	Mode	Actions
contentdir	10	0644	edit dl rm
cp_centos_major_version	1	0600	edit dl rm
ea4_repo_uri_os	9	0644	edit dl rm
infra	6	0644	edit dl rm
os_name_prefix	1	0600	edit dl rm
stream	9	0644	edit dl rm

Edit: /etc/dnf/vars/ea4_repo_uri_os (9B)

CentOS_8