commits are snapshots. cherry-picking/rebasing diffs a commit and its (first?) parent, and applies the diff on a base commit to create a new commit. if you `gi

commits are snapshots. cherry-picking/rebasing diffs a commit and its (first?) parent, and applies the diff on a base commit to create a new commit. if you `git replace` a single commit and change its contents, its children do not change their contents, so `git show`ing any direct child will show a new diff, not previously present, reverting the actions you've performed in `git replace`.