History of deepen 2 changes

In src/cli/sync.rs, lines 680–702 on 85ef828b6bf03f79e9b74aa601542c2ae258a77daab9eea9fe6c5bc14ff3579b. 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 680,702:src/cli/sync.rs.