> But putting the ticket number in the commit ... that's basically automatic, I don't know why it should be that big a concern. The branch itself gets created with the ticket number and everything follows from that, there's no extra effort.

That poster said "attach a JIRA Ticket to the PR", so in their case, it's not that automatic.

A lot of Jira shops use the rest of the stack, so it becomes automatic. The branch is named automatically when created from a link on the Jira task. Every time you push it gives you a URL for opening the PR if you want, and everything ends up pre-filled. All of the Atlassian tools recognize the format of a task ID and hyperlink automatically.

I haven't dealt with non-Atlassian tools in a while but I assume this is pretty much bog standard for any enterprise setup.

If you are using the Atlassian Git clone then just putting the JIRA ticket in the title automagically links the PR to the ticket.