I'm trying to build python-executing for epel9 (https://bugzilla.redhat.com/show_bug.cgi?id=2049855) using this command (from Fedora 35):

fedpkg --release epel9 mockbuild

The build fails with these lines:

Handling asttokens from tox --print-deps-only: py39

Requirement not satisfied: asttokens
Handling pytest from tox --print-deps-only: py39                        
Requirement not satisfied: pytest

As I understand, I have to somehow enable Centos 9 stream CRB repo, but I cannot figure it out how.

What should I do to make the build successful?