/usr/share/doc/gfal2-dbg/changelog.Debian.gz is in gfal2-dbg 2.10.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gfal2-dbg/../libgfal2-2/changelog.Debian.gz
/usr/share/doc/gfal2-dbg/../libgfal2-2/changelog.Debian.gz