$ git clone -n https://src.fedoraproject.org/rpms/NLopt.git /var/lib/mock/f31-build-75931-31347/root/chroot_tmpdir/scmroot/NLopt
Cloning into '/var/lib/mock/f31-build-75931-31347/root/chroot_tmpdir/scmroot/NLopt'...
$ git reset --hard b62d30b729e3fc687041ab3d35656118c883db4a
HEAD is now at b62d30b - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild