$ git clone -n https://src.fedoraproject.org/rpms/libvpx.git /var/lib/mock/f33-build-294438-55329/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/f33-build-294438-55329/root/chroot_tmpdir/scmroot/libvpx'...
$ git reset --hard b4539c2e23d5ecb01493c6875c893051bccd9d34
HEAD is now at b4539c2 - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild