To add a repository to your Fedora use yum or dnf.

Fedora ??:
# yum install http://linux.ria.ua/SRPMS/fedora_repository/??/x86_64/ria-release-fedora-??-0.fc??.ria.noarch.rpm

for example:
# yum install http://linux.ria.ua/SRPMS/fedora_repository/38/x86_64/ria-release-fedora-38-1.fc38.ria.noarch.rpm