This is now working in Fedora 36.

My dnf doesn't see the update.

➜  ~ sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2022-8cf9d64c36
Fedora 36 - x86_64                                                                                                                         22 kB/s |  20 kB     00:00    
Fedora 36 openh264 (From Cisco) - x86_64                                                                                                  1.3 kB/s | 989  B     00:00    
Fedora Modular 36 - x86_64                                                                                                                 22 kB/s |  19 kB     00:00    
Fedora 36 - x86_64 - Updates                                                                                                               20 kB/s |  18 kB     00:00    
Fedora 36 - x86_64 - Updates                                                                                                              327 kB/s | 457 kB     00:01    
Fedora Modular 36 - x86_64 - Updates                                                                                                       25 kB/s |  17 kB     00:00    
Fedora 36 - x86_64 - Test Updates                                                                                                          20 kB/s |  13 kB     00:00    
Fedora 36 - x86_64 - Test Updates                                                                                                         286 kB/s | 426 kB     00:01    
packages for the GitHub CLI                                                                                                                23 kB/s | 3.0 kB     00:00    
RPM Fusion for Fedora 36 - Free                                                                                                            12 kB/s | 7.7 kB     00:00    
RPM Fusion for Fedora 36 - Free - Updates                                                                                                  49 kB/s | 7.0 kB     00:00    
No security updates needed, but 252 updates available
Dependencies resolved.
Nothing to do.
Complete!                                                                                                                                                           /14.3s
➜  ~ enki
zsh: enki: command not found...

Found out that my mirror is stalled as described here https://www.mail-archive.com/devel@lists.fedoraproject.org/msg176691.html

➜  ~ sudo dnf repolist --repo=updates-testing -v
Loaded plugins: builddep, changelog, config-manager, copr, debug, debuginfo-install, download, etckeeper, generate_completion_cache, groups-manager, needs-restarting, playground, repoclosure, repodiff, repograph, repomanage, reposync, system-upgrade, tracer
DNF version: 4.13.0
cachedir: /var/cache/dnf
Last metadata expiration check: 0:05:49 ago on Thu 18 Aug 2022 08:06:52 AM +03.
Repo-id            : updates-testing
Repo-name          : Fedora 36 - x86_64 - Test Updates
Repo-revision      : 1660698910
Repo-updated       : Wed 17 Aug 2022 04:55:29 AM +03
Repo-pkgs          : 12,353
Repo-available-pkgs: 12,353
Repo-size          : 15 G
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=updates-testing-f36&arch=x86_64
  Updated          : Thu 18 Aug 2022 08:06:52 AM +03
Repo-baseurl       : rsync://mirror.datacenter.by/fedora-linux/updates/testing/36/Everything/x86_64/ (66 more)
Repo-expire        : 21,600 second(s) (last: Thu 18 Aug 2022 08:06:52 AM +03)
Repo-filename      : /etc/yum.repos.d/fedora-updates-testing.repo
Total packages: 12,353

And so far I haven't found a way how to select another mirror.

All bugs are gone. Can use Enki again. Awesome. :D

For me it still has problems. If flake8 is enabled, loading Python files causes an instant crash (or when you scroll the file it does). Comments 10 and 11 on BX#2066026. It works for some file types but some features still cause an exception.

Sorry BZ#2066026

Reported next crash upstream https://github.com/andreikop/enki/issues/480