I don't get SourceTree!
On your website you say to use the issue ticket ID in the branch name (see Reference issues in your development work). Quote:
> Checkout a new branch in your repo, using the issue key at the beginning of the branch name. For example, git checkout -b JRA-123-<branch-name>.
Yet, when I try to create such a branch in SourceTree:

It does not let me. Yet, I was able to do it with no issues using TortoiseGit:

And it was then visible in SourceTree:

Why did it not want to accept my new branch name? #confused