History of deepen 2 changes

In src/cli/sync.rs, lines 599–621 on 9054759cfbd1ad8f7b4fd02ecf5e7497b8a8bfd0065b26719d93aaca1e7cf311. 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.