is there a provisional way to build for Fedora >22 ?
I need to update my package in RPMFusion.
OK so let's try to answear for all
Until F-21 is EOL at the end of the month, and if you have an update that can goes for f21 and later with no update already done in git for a later branch:
If your update is only relevant to f22 or f23 branch, please clone your package from github.com/rpmfusion and submit a bugreport with the update as an attachment. (using git format-patch)