$ git clone -n https://src.fedoraproject.org/rpms/mathgl.git /var/lib/mock/f31-build-114493-34455/root/chroot_tmpdir/scmroot/mathgl
Cloning into '/var/lib/mock/f31-build-114493-34455/root/chroot_tmpdir/scmroot/mathgl'...
$ git reset --hard ca879dea07f1f2f65b37fba829d6fc9f0da99de7
HEAD is now at ca879de - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild