Once at your Moodle base folder, just:
- 
/usr/bin/php admin/cli/maintenance.php --enable 
- 
git pull 
- 
/usr/bin/php admin/cli/maintenance.php --disable 
- 
Log in to the site, as administrator, and follow the web steps to update database, etc. 
Once at your Moodle base folder, just:
/usr/bin/php admin/cli/maintenance.php --enable
git pull
/usr/bin/php admin/cli/maintenance.php --disable
Log in to the site, as administrator, and follow the web steps to update database, etc.