20210923 If things get confusing or go wrong, some salient advice from xkcd: delete the project, and download a fresh copy.
It does not always need to be that drastic. Things can go wrong when trying to merge upstream changes into your own local working copy before you then want to submit your changes either directly or through a pull request (the latter is recommended).
Git is pretty good at suggesting what to do at different stages of the workflow, so follow those suggestions.
Here’s a few commands to try to get things back into sync when things seem to have gone wrong.
A local repository may retain known branches over time even though they get deleted from the remote repository.
To delete stale references from the local copy:
git remote prune origin
To then fetch updates (i.e. re-sync with origin) and prune:
git fetch --prune origin
git branch -d kayon/validator
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