• Extension version: v0.76.1
• VSCode Version: 1.84.2
• OS: linux
• Repository Clone Configuration (fork of an upstream repository): origin (my fork): https://github.com/RasmusWL/codeql, upstream: https://github.com/github/codeql
• Github Product: Github.com

Steps to Reproduce:

0. Work on a fork of a repo.

1. Create a branch on top of a non-main branch on your own fork

   Details

   $ git log --oneline --graph
   * d93926291d - (HEAD -> example-pr) dummy (33 seconds ago) <Rasmus Wriedt Larsen>
   * 69453aa144 - (origin/clean-tests, clean-tests) Python: Fix missing newline in `.expected` (26 minutes ago) <Rasmus Wriedt Larsen>
   * 55f5b26ba6 - Python: Accept new ordering of query predicates in `.expected` (27 minutes ago) <Rasmus Wriedt Larsen>
   * 721bde1ce8 - Python: Delete orphaned `.expected` files (37 minutes ago) <Rasmus Wriedt Larsen>
   *   2e9d548083 - (upstream/main, upstream/HEAD, origin/main, main) Merge pull request #14706 from RasmusWL/class-attribute-flow (2 hours ago) <Rasmus Wriedt Larsen
   

2. Use extension to start creating a PR.

   • it initially suggested to use the non-main branch as the target for this PR.

3. Use the Change Repository... feature of the branch selector of the base branch, set it to upstream (github/codeql)

4. Search for main on upstream

   • but get no results 😞
     

(I am able to select main on the origin remote, but that just files a PR against the main branch on my own fork 🙈)