/usr/share/man/man1/latexdiff-svn.1.gz is in latexdiff 1.1.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/latexdiff-vc.1.gz
/usr/share/man/man1/latexdiff-vc.1.gz