Description of problem:
The owner of the mcomix3 repository on Github[1] has declared it officially abandoned, the repo has been emptied and no further development is being done on mcomix3 now that the parent mcomix project[2] has released with Python 3 support (since 2.0.0).

I hate to say it, but it looks like switching _back_ to upstream, non-forked mcomix is the way forward.

Version-Release number of selected component (if applicable):
mcomix3-0-0.26.D20211016git483f4b3

How reproducible:
100%

Additional info:

[1]: https://github.com/multiSnow/mcomix3
[2]: https://sourceforge.net/projects/mcomix/