/usr/s390x-linux-gnu/lib/libgo.so.7 is in libgo7-s390x-cross 5.3.1-14ubuntu2cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/s390x-linux-gnu/lib/libgo.so.7.0.0
/usr/s390x-linux-gnu/lib/libgo.so.7.0.0