Help with submitting patch

Hello,

I wanted to submit a patch for
https://bugs.documentfoundation.org/show_bug.cgi?id=52020
But I am wholly unfamiliar with gerrit. I am familiar with Github and
incorrectly created a pull request before I realized that was not how it is
done https://github.com/LibreOffice/core/pull/4
I am working on building a Windows version with this patch included for
personal use so that I, and others can use LibreOffice again with Khmer and
other related minority languages, but I thought it might be helpful to add
a patch to the bug to see if it might get pushed through.

Most of the tutorials seem to be focused on Linix - that is fine. But which
branch should I choose (from:
https://wiki.documentfoundation.org/Development/gerrit )?

git checkout -b <a_local_branch_name_of_your_choice>


Could someone enlighten me?

Thanks, sorry for the nob question.

Regards,
Nathan