History of deepen 2 changes

In src/cli/sync.rs, lines 599–621 on b0e64e81e4fb73fd37e6188f78823469392ccdd711354c3bac8946eec63c13df. 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.