$ git clone -n https://src.fedoraproject.org/rpms/tuxmath.git /var/lib/mock/f33-build-151478-43278/root/chroot_tmpdir/scmroot/tuxmath
Cloning into '/var/lib/mock/f33-build-151478-43278/root/chroot_tmpdir/scmroot/tuxmath'...
$ git reset --hard cbd33e3e704c11fb73dcc0123e662d4033977b32
HEAD is now at cbd33e3 Fix FTBFS.