Enter directory with repositories and download dani/bucklespring copr there
cd /etc/yum.repos.d
sudo wget https://copr.fedorainfracloud.org/coprs/dani/bucklespring/repo/fedora-$(rpm -E %fedora)/dani-bucklespring-fedora-$(rpm -E %fedora).repo
Install bucklespring
rpm-ostree install bucklespring bucklespring-wayland
Add current user to input group to make bucklespring work under Wayland
grep -E '^input:' /usr/lib/group | sudo tee -a /etc/group
sudo usermod -a -G input $(id -un)
Silverblue-specific input group fix were found here