History of Tracker::fetch 1 change

In crates/hub/src/swarm.rs, lines 65–77 on ca0c443c30cfa854e929cc374594a0e4a80f7fa24e0e42e4701734a6d6ef72fb. 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 65,77:crates/hub/src/swarm.rs.