Please branch and build python3-testtools for epel9.
https://pagure.io/releng/fedora-scm-requests/issue/43817
FEDORA-EPEL-2022-c4b352d61a has been submitted as an update to Fedora EPEL 9. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2022-c4b352d61a
FEDORA-EPEL-2022-c4b352d61a has been pushed to the Fedora EPEL 9 stable repository. If problem still persists, please make note of it in this bug report.