Changelog for deepin-help-15.4.8-2.fc28.noarch.rpm :

* Wed Feb 07 2018 Fedora Release Engineering - 15.4.8-2- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
* Thu Jul 20 2017 mosquito - 15.4.8-1- Update to 15.4.8
* Sat Jul 15 2017 mosquito - 15.4.7-1- Initial build