Totally Confused about Repo Sync

Okay, so I’ve connected Codex to my repo and it suggested some changes. I get that it’s as though it is another coder with its own copy of the repo, and it can commit but not push its changes. So I have to make my changes locally. Okay, so I d/l and apply a patch to my local repo, then commit and push my now-patched code. And I go back to Codex and ask for something else (or there’s a bug and it needs to make another change, or whatever). It gives me a new patch, BUT this patch appears to be to the OLD code, not the latest code. Both codex and I should have the same code base (although its commit is different than mine, and its is local, while mine has been pushed). What I expected was either that it would repull the latest code from the repo, and work from there, which would include the patch it just gave me, or work from its local version, which should be the same as mine. But … well, things are just confused. I need to be able to tell it: Please just repull the latest commit from the repo, pretty please? Instead is wants me to rebase to a non-existent commit, bcs, of course, it didn’t actually push its commit. I’m totally confused about how I’m supposed to be working with this if it can’t push commits, and it won’t repull the repo, where I made the change it recommended.