/usr/mipsel-linux-gnu/bin/objcopy is in binutils-mipsel-linux-gnu 2.25-5.
This file is owned by root:root, with mode 0o755.
It is a symlink to /usr/mipsel-linux-gnu/bin/./usr/bin/mipsel-linux-gnu-objcopy
/usr/mipsel-linux-gnu/bin/./usr/bin/mipsel-linux-gnu-objcopy