/usr/share/doc/libgcr-3-dev/changelog.Debian.gz is in libgcr-3-dev 3.18.0-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgcr-3-dev/../gir1.2-gcr-3/changelog.Debian.gz
/usr/share/doc/libgcr-3-dev/../gir1.2-gcr-3/changelog.Debian.gz