alt Hacker NewsRebase makes sense when you realize git doesn't have branches. Git has tags that move but no branches. That means when you merge you have no clue which branch was the mainline and which was the fork. This is a question I often ask 10 years after switching to git. Sadly git has better tooling so it is worth using despite the issues.
> That means when you merge you have no clue which branch was the mainline and which was the fork.
You mean - when looking at the history?
Incidentally, once you get used to jujutsu, you realize that the question is meaningless. A merge is simply the child of two nodes. It's a symmetric operation between the two branches. The thing that makes it "complicated" in git and traditional VCS's is the insistence in assigning a name to the resulting merge (so if you're merging into main, you want to call the new node "main"). Since jujutsu doesn't automatically carry the name forward, you see the "reality" of merge being a symmetric operation (i.e. you don't merge a branch "into" another branch - you are simply merging two branches).