Parallel jobs causes randomly gh pages push failure

[jupe]

Behaviour

Steps to reproduce this issue

Parallel jobs causes randomly gh pages push failure:

Pushing public directory to main branch on ... repo
  /usr/bin/git push https://***@github.com/***.git main
  To https://github.com/***.git
   ! [rejected]        main -> main (fetch first)
  error: failed to push some refs to 'https://github.com/***.git'
  hint: Updates were rejected because the remote contains work that you do
  hint: not have locally. This is usually caused by another repository pushing
  hint: to the same ref. You may want to first integrate the remote changes
  hint: (e.g., 'git pull ...') before pushing again.
  hint: See the 'Note about fast-forwards' in 'git push --help' for details.
  Error: The process '/usr/bin/git' failed with exit code 1

Expected behaviour

Succesful push

Actual behaviour

failures

error: failed to push some refs to ...
  hint: Updates were rejected because the remote contains work that you do
  hint: not have locally. 

I think library should have some kind of retry mechanism for this case

[crazy-max]

Race condition is expected if you try to push changes against the same ref across multi jobs in your workflow. What's your use case?