/usr/lib/ is in mercurial-git 0.6.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/hgext/
/usr/lib/python2.7/dist-packages/hgext/git/
/usr/lib/python2.7/dist-packages/hgext/git/util.py
/usr/lib/python2.7/dist-packages/hgext/git/overlay.py
/usr/lib/python2.7/dist-packages/hgext/git/_ssh.py
/usr/lib/python2.7/dist-packages/hgext/git/help/
/usr/lib/python2.7/dist-packages/hgext/git/help/git.rst
/usr/lib/python2.7/dist-packages/hgext/git/verify.py
/usr/lib/python2.7/dist-packages/hgext/git/gitdirstate.py
/usr/lib/python2.7/dist-packages/hgext/git/git_handler.py
/usr/lib/python2.7/dist-packages/hgext/git/hg2git.py
/usr/lib/python2.7/dist-packages/hgext/git/__init__.py
/usr/lib/python2.7/dist-packages/hgext/git/hgrepo.py
/usr/lib/python2.7/dist-packages/hgext/git/gitrepo.py