Changelog for gst-devtools-1.12.3-3.fc28.x86_64.rpm :

* Wed Feb 07 2018 Fedora Release Engineering - 1.12.3-3- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
* Wed Oct 04 2017 Gwyn Ciesla - 1.12.3-2- Review fixes.
* Mon Oct 02 2017 Gwyn Ciesla - 1.12.3-1- Initial package.