Creating a new branch in a new repo (initialized from the UI) fails

[jtpio]

Description

Initializing a repo from the jupyterlab-git UI and trying to create a new branch fails.

Reproduce

jupyterlab-git-init-branch-issue.webm

Expected behavior

It should be possible to create a new branch directly after initializing the git repo.

Context

• Python package version: 0.50.1

• Extension version: 0.50.1

• Git version: 2.43.0

• Operating System and its version: