History of mark 2 changes

In crates/hub/src/diffusion.rs, lines 107–109 on df5c69cbd047129e97727224870f5c9b49f5d634eccb37639188fc7d739906d4. 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 107,109:crates/hub/src/diffusion.rs.