Comment 3 for bug 1942985

A new one, slightly different

$ git remote -v
paelzer https://git.launchpad.net/~paelzer/ubuntu/+source/checksecurity (fetch)
paelzer ssh://<email address hidden>/~paelzer/ubuntu/+source/checksecurity (push)
pkg https://git.launchpad.net/ubuntu/+source/checksecurity (fetch)
pkg ssh://<email address hidden>/ubuntu/+source/checksecurity (push)

$ git ubuntu prepare-upload args
Traceback (most recent call last):
  File "/snap/git-ubuntu/820/usr/bin/git-ubuntu", line 11, in <module>
    load_entry_point('gitubuntu==1.0', 'console_scripts', 'git-ubuntu')()
  File "/snap/git-ubuntu/820/usr/lib/python3/dist-packages/gitubuntu/__main__.py", line 270, in main
    sys.exit(args.func(args))
  File "/snap/git-ubuntu/820/usr/lib/python3/dist-packages/gitubuntu/prepare_upload.py", line 170, in cli_printargs
    headers = push(
  File "/snap/git-ubuntu/820/usr/lib/python3/dist-packages/gitubuntu/prepare_upload.py", line 118, in push
    assert gitubuntu.importer.VCS_GIT_REF_VALIDATION.fullmatch(ref.name)
AssertionError

What is broken here, I do not know :-/
So no workaround for me ...