History of deepen 2 changes

In src/cli/sync.rs, lines 684–706 on fc1a466a1e66c2759e326cc3662ab9648f2e962dabe288a29e32b1483dd7691a. 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 684,706:src/cli/sync.rs.