This seems very similar to how I work by default. I sort of think in terms of "keyframes" and "frames", or "commits" and "fixes to commits."

Whenever I sit down to code with a purpose, I'll make a branch for that purpose: git checkout -b wip/[desc]

When I make changes that I think will be a "keyframe" commit, I use: git add . git commit -m "wip: desc of chunk" (like maybe "wip: readme")

if I make refinements, I'll do: git add . git commit --amend

and when I make a nee "keyframe commit": git commit -m "wip: [desc 2]"

and still amend fixes.

Occasionally I'll make a change that I know fixes something earlier (i.e. an earlier "keyframe" commit) but I won't remember it. I'll commit and then do: git add . git commit -m "fixup: wip desc, enough to describe which keyframe commit should be amended"

at the end I'll do a git rebase -i main and see something like:

123 wip: add readme (it's already had a number of amends made to it) 456 wip: add Makefile (also has had amendments) 789 wip: add server (ditto) 876 fixup: readme stuff 098 fixup: more readme 543 fixup: makefile

and I'll use git rebase -i to change it to reword for the good commits, and put the fixups right under the ones they edit. then i'll have a nice history to fast forward into main.