last-modified support #2256
Description
Summary 💡
As documented in https://github.blog/open-source/git/highlights-from-git-2-52/ , the new git last-modified command efficiently walks commits to determine the last modification to each file in a tree.
Motivation 🔦
This would help for operations like displaying a directory with the most recent commit that modifies it (as various Git UIs and forges do). It's also useful for importing/exporting a git tree into some other context that wants an mtime for every file.