/usr/share/doc/libglobus-gram-protocol-dbg/changelog.Debian.gz is in libglobus-gram-protocol-dbg 11.3-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libglobus-gram-protocol-dbg/../libglobus-gram-protocol3/changelog.Debian.gz