/usr/mips64el-linux-gnuabi64/bin/objcopy is in binutils-mips64el-linux-gnuabi64 2.26-8ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/mips64el-linux-gnuabi64/bin/../../bin/mips64el-linux-gnuabi64-objcopy