History of deepen 2 changes

In src/cli/sync.rs, lines 680–702 on 2dd42fa169c86ca5ce98f71fd045a2cd45d1e305813b775740e8135819a857c5. 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.