How to change initial Repo opened at startup

[Deleted user]

When I start Sourcetree, it opens by default a single repo -- the very first repo I used it with, long ago. No matter that I haven't touched that repo in months, and always close its tab, and have others open. When I open the app, it takes me to this stale repo. Every. Single. Time.

How can I change this maddening behaviour? If the app at least remembered where I was working, then the loss of convenient repo navigation in recent updates would be easier to take. Or if the app would default to a 'choose a repo to work with' screen if it truly had no remembered context, that would be reasonable. But I'm at the point of wondering if I need to delete the whole app and reinstall once I finish a project to change it's mind about what the 'default' repo is. And that's enough extra hassle I might not follow through on the second half of the process.