I think I’ve described how I achieve kinda your desired workflow in a comment yesterday [0].

[0]: https://news.ycombinator.com/item?id=45970668

ha! very interesting how slept on jj is

its been essential to my workflow as well

i use both jj and git and jj is great for just creating a snapshot that i can revert to incase it fails

im still exploring it to see what else i can do with it for agentic use