A new git bundle creation and upload system captures the current repository state (including uncommitted work via git stash create) and uploads it as a seed bundle for remote CCR sessions. Supports automatic fallback from --all to HEAD-only bundles when the full bundle exceeds size limits.
Evidence
Bundle upload system (search for "git bundle create" and "_source_seed.bundle")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.