Dropbox cut its monorepo from 87GB to 20GB.
It ran a GitHub‑approved server‑side git repack, tuned by window/depth. Clone times dropped to under 15 minutes.
Engineers traced growth to Git’s 16‑char path heuristic. That heuristic mispaired i18n files. They tested --path-walk locally, then ran phased replica repacks and measured the impact.
