/usr/share/emacs/site-lisp/elpa-src/ is in elpa-notmuch 0.23.7-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/coolj.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/make-deps.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-address.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-autoloads.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-company.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-compat.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-crypto.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-hello.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-jump.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-lib.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-maildir-fcc.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-message.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-mua.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-parser.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-pkg.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-print.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-query.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-show.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-tag.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-tree.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-version.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch-wash.el
/usr/share/emacs/site-lisp/elpa-src/notmuch-0.23.7/notmuch.el