WIP: Speed up branch graphs for simple pushes

This will speed up pushes where the push isn't forced and there are no merge commits. The pushed commits can be counted and adjust the graphs without needing full recalculations.

mentioned in issue #12619 (moved)

mentioned in issue #14058 (closed)

@brunsa2 do you want to fix the conflicts or should we close this?

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I've not had much time to work on this recently (nor !3023), but hope to work on it within the next weeks or so. I can just rebase*/merge then to fix conflicts.

*Rebase? Technically at this point it's a published branch, but I don't know if anyone is using it. I am assuming that the safer thing is a merge here, correct?

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You can rebase since no one is using the branch.

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@brunsa2 I see only puts in this merge request? Is this intentional?

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@brunsa2 I'm closing this eagerly, feel free to reopen once ready.

closed

Yeah, it can be kept closed for now. I have another series of things I'm working on for this feature before I work on this aspect again. The puts were just exploratory logging for myself.