> Of course youre up to date with what you last fetched - that is _always_ the case.
This might be where the misunderstanding is. You are not always up to date with what you last fetched. Say you have develop checked out, and you run a git pull. As part of that process, git checks the status of all upstream branches, and updates your local reference copy of them (that’s what origin/develop, origin/production, origin/feature-branch-1 are: your local reference copies of upstream). Then you check out production, which you last touched two weeks ago. Git will let you know that your two-week-old local copy is behind origin/production, which is your local reference copy of what it just saw when it fetched from upstream.
This might be where the misunderstanding is. You are not always up to date with what you last fetched. Say you have develop checked out, and you run a git pull. As part of that process, git checks the status of all upstream branches, and updates your local reference copy of them (that’s what origin/develop, origin/production, origin/feature-branch-1 are: your local reference copies of upstream). Then you check out production, which you last touched two weeks ago. Git will let you know that your two-week-old local copy is behind origin/production, which is your local reference copy of what it just saw when it fetched from upstream.