/usr/arm-linux-gnueabihf/bin/objcopy is in binutils-arm-linux-gnueabihf 2.28-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/arm-linux-gnueabihf/bin/../../bin/arm-linux-gnueabihf-objcopy
/usr/arm-linux-gnueabihf/bin/../../bin/arm-linux-gnueabihf-objcopy