src/vs/workbench/contrib/scm/browser/scmViewService.ts/SCMViewService/focus
class SCMViewService:	focus(repository: ISCMRepository | undefined): void {
		if (repository && !this.visibleRepositories.includes(repository)) {
			return;
		}

		this._focusedRepository = repository;
		this._onDidFocusRepository.fire(repository);
	}