/usr/share/maven-repo/org/codehaus/plexus/plexus-ant-factory/debian/plexus-ant-factory-debian.jar is in libplexus-ant-factory-java 1.0~alpha2.1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/codehaus/plexus/plexus-ant-factory/debian/../../../../../../java/plexus-ant-factory.jar