> Normally, only commits which are reachable by a branch are visible in stock Git.
But this is not true: a "soft" tag suffices to keep a pseudo-branch visible to, say git-log --graph. In my own workflow, I've let these replace temporary branches proper.
On the topic, I'm just going to plug the tool git-branchless. Completely transformative for my use of git at work. Stacked commits that actually work!