Function sync_worktree 

pub fn sync_worktree(
    store: &mut Store,
    repo: &Repo,
    cache: &ObjectCache,
    extractor: &dyn Extractor,
) -> Result<SyncReport, SyncError>

Sync store to the working tree: the committed HEAD state with uncommitted edits to tracked files overlaid on top (a pre-commit preview).

Committed blobs come from the content-addressed cache as in sync; then each tracked file whose working copy differs from its committed blob is re-extracted in memory (never cached, since dirty content is not a git object), and deleted files are dropped. New untracked files are not yet included. The recorded sync state encodes the dirty set, so a later committed sync correctly supersedes the overlay.

Errors

Returns a SyncError if git access, extraction caching, working-tree I/O, or the store rebuild fails.