History of submodule_add 2 changes

In src/cli/sync.rs, lines 536–553 on 9df6217f5f4749afbf52c40f1032cdbbde91dd3b9de8bcc97fc383012bf59842. 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 536,553:src/cli/sync.rs.