$ git clone -n https://src.fedoraproject.org/rpms/vfrnav.git /var/lib/mock/f33-build-157963-43401/root/chroot_tmpdir/scmroot/vfrnav
Cloning into '/var/lib/mock/f33-build-157963-43401/root/chroot_tmpdir/scmroot/vfrnav'...
$ git reset --hard 6ca328308722136d0bae1853046aeebb227b1cba
HEAD is now at 6ca3283 don't add std=c++11