Shell script

I want a shell script or a webpage password protected but no database password to be on files 1 - when logged in i should be able to pull files from gitlab and so when a developer pushes in master branch all changed files should download every time i run the script. 2 - the files pulled we need to be able to give it permission like www-data:www-data and chown 755 3 - i need to be able to exclude files from a folder 4 - the script will run on different folder from where it needs to be pulled to so the script will reside in a users created folder and pulled files will be on web server the servers will be running ubuntu 20.04 with ngnix and php 7.4