History of deepen 2 changes

In src/cli/sync.rs, lines 599–621 on 66eb646918c276c5edbb1db1b3e5753122c3aa431c8569b28b38e7e8480732cc. 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.