History of deepen 3 changes

In src/cli/sync.rs, lines 810–832 on dd6147dcf9c22b47a9554f274d633f4cbf1444d615a2504041e89b5225cfada0. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 810,832:src/cli/sync.rs.