$ git clone -n https://src.fedoraproject.org/rpms/mesa-demos.git /var/lib/mock/f31-build-86769-31706/root/chroot_tmpdir/scmroot/mesa-demos
Cloning into '/var/lib/mock/f31-build-86769-31706/root/chroot_tmpdir/scmroot/mesa-demos'...
$ git reset --hard afe6062407044586100d82659b9125bff457cb04
HEAD is now at afe6062 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild