History of deepen 2 changes

In src/cli/sync.rs, lines 599–621 on b3e60590316403ebed833ca1d19262bd7df3365f20010ae74c55946210c2d63c. 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 599,621:src/cli/sync.rs.