src/vs/workbench/contrib/scm/browser/scmViewService.ts/SCMViewService/toggleSortKey
class SCMViewService:	toggleSortKey(sortKey: ISCMRepositorySortKey): void {
		this._repositoriesSortKey = sortKey;
		this._sortKeyContextKey.set(this._repositoriesSortKey);
		this._repositories.sort(this.compareRepositories.bind(this));

		this._onDidChangeRepositories.fire({ added: Iterable.empty(), removed: Iterable.empty() });
	}