https://github.com/s-moch/linux-saa716x/archive/saa716x-5.18.zip
https://martinkg.fedorapeople.org/DVB-S2-Driver/linux-saa716x-saa716x.tar.xz
Content (linux-saa716x-saa716x-4.19/drivers/media/common/saa716x)

- copy saa716x.tar.bz2 to /usr/local/src
cp saa716x.tar.bz2 /usr/local/src
cp linux-saa716x-saa716x.tar.xz /usr/local/src
cd /usr/local/src; tar xfJ linux-saa716x-saa716x.tar.xz

- copy mk_dvb_kernel_modules.sh to ~/rpmbuild/BUILD
cp mk_dvb_kernel_modules.sh ~/rpmbuild/BUILD
cd ~/rpmbuild/BUILD
sudo chmod +x mk_dvb_kernel_modules.sh
sudo ./mk_dvb_kernel_modules.sh