You can use the .rpm’s build in somebody’s private package, not that that always works.
The better solution is off coarse to do get an actual update done. I did read something about it the release process yesterday as there was a question on “Ring 0” but it is not yet clear to me.
It looks to me the best route would be that this openh264 package is part of some Devel Project I could find the list of projects, but do not know how to check if openh264 is part of any project.