$ git clone -n https://src.fedoraproject.org/rpms/compat-tolua++.git /var/lib/mock/f31-build-66202-29839/root/chroot_tmpdir/scmroot/compat-tolua++
Cloning into '/var/lib/mock/f31-build-66202-29839/root/chroot_tmpdir/scmroot/compat-tolua++'...
$ git reset --hard 921005a9805ccf1ba0af2412866a205324d85043
HEAD is now at 921005a Fix FTBFS with scons-3.0.4 (rhbz#1674758) Switch to python3-scons