/usr/share/doc/gir1.2-gda-5.0/changelog.Debian.gz is in gir1.2-gda-5.0 5.2.4-1ubuntu1.
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It is a symlink to /usr/share/doc/gir1.2-gda-5.0/../libgda-5.0-4/changelog.Debian.gz
/usr/share/doc/gir1.2-gda-5.0/../libgda-5.0-4/changelog.Debian.gz