Fetch updates your knowledge of a remote history without integrating it into your current branch. A teammate's new commit should appear under a remote-tracking reference while your working file stays unchanged. That separation lets you inspect before choosing a merge or rebase. Pull combines fetching with integration, so it answers a different request. These tasks deliberately make the remote move after your local snapshot, exposing whether you changed more than asked. For example, origin/main can advance while main stays on its earlier route. Comparing those two references helps you decide whether the next integration can fast-forward or must preserve independent local commits.