after this unsolved issue https://www.aapanel.com/forum/d/15181-indexphp-mysteriously-edited
After that I use git to monitor any changes that occur to my folders and files.

above is an example when I did the "git status" command I was very surprised when I saw that many files had modified themselves and some files had been deleted by themselves
can you help ? guessing what virus or something happen in my site ? cause this happen every day even i use "git reset HARD" to revert to last commit