/usr/powerpc-linux-gnu/lib64/libgo.so.4 is in lib64go4-powerpc-cross 4.8.5-4ubuntu2cross3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/powerpc-linux-gnu/lib64/libgo.so.4.0.0
/usr/powerpc-linux-gnu/lib64/libgo.so.4.0.0