Please branch and build python-PyMySQL in epel9. If you do not wish to maintain python-PyMySQL in epel9, or do not think you will be able to do this in a timely manner, the EPEL Packagers SIG would be happy to be a co-maintainer of the package; please add the epel-packagers-sig group through https://src.fedoraproject.org/rpms/python-PyMySQL/addgroup and grant it commit access, or collaborator access on epel* branches. I would also be happy to be a co-maintainer (FAS: jonathanspw). I can be the primary contact for EPEL (FAS: jonathanspw).
When I tried to create the branch, I got this message: "Could not execute request_branch: This package is already an EL package, therefore it cannot be in EPEL. If this is a mistake or you have an exception, please contact the Release Engineering team." So I think the package is already available.
I confirmed that python3-PyMySQL is available in RHEL 9 AppStream, therefore is ineligible for EPEL 9 by policy. Looking at the bug that led to this bug's creation, it seems this error message was misinterpreted. No matching package to install: 'python3dist(pymysql) >= 1.0.2' The package is available but is only at version 0.10.1.