Changes are not appearing until after a PR is created

[brantburnett]

Short summary

Whenever changes are completed you are unable to view the changes unless you create a PR first

Affected version or release

v0.2.12

Installation context

No response

What happened?

At a glance, this appears to be because it is assuming that the master branch is the correct branch for the diff. But this repository uses main, not master. It's failing on git ["rev-parse", "master"]. This was working until an update in the last few days.

Once a PR is created, the changes appear.

Steps to reproduce

1. Create a session on a repository using main as the default branch
2. Let the session make changes
3. Attempt to view the changes.

Expected behavior

Changes should be displayed

Additional context

No response