Wonderful, how have showed me how to do the update properly.
showed that everything was up to date. However,
showed all kinds of modified issues, as follows:
pi@atlantis:/etc/.pihole $ cd /var/www/html/admin;git status
On branch master
Your branch is behind 'origin/master' by 2348 commits, and can be fast-forwarded.
(use "git pull" to update your local branch)
Changes not staged for commit:
(use "git add ..." to update what will be committed)
(use "git checkout -- ..." to discard changes in working directory)