History of deepen 2 changes

In src/cli/sync.rs, lines 599–621 on 9d333fc9ca1b89edf2f90547073937a96fad9f24f5dfb8326c24d9c1f0937f4a. 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.