Summary: ownership is not preserved.

• Create two files in a remote folder to simulate the wiki install on the server.

• Change their permissions and ownership to match what's on the server:

  ~/gittest/remote$ ls -l
   
  total 24
  -rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:20 file1.txt
  -rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:20 file2.txt

• Initialize git:

  git init
  git add .
  git commit -m 'initial commit on remote'
  git log
   
  commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (HEAD -> master)
  Author: Patrick Truchon <patoo@rbox.me>
  Date:   Sun Dec 26 10:21:24 2021 -0800
   
      initial commit on remote

• Create a local folder and clone from remote:

  git clone ~/gittest/remote/ ~/gittest/local/

• The log on the local copy looks good:

  ~/gittest/local$ git log
   
  commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (HEAD -> master, origin/master, origin/HEAD)
  Author: Patrick Truchon <patoo@rbox.me>
  Date:   Sun Dec 26 10:21:24 2021 -0800
   
      initial commit on remote

• But the www-data group ownership wasn't preserved:

  ~/gittest/local$ ls -l
   
  total 24
  -rwxrwxr-x 1 ptruchon ptruchon 26 Dec 26 10:24 file1.txt
  -rwxrwxr-x 1 ptruchon ptruchon 26 Dec 26 10:24 file2.txt

• Change the group back to www-data:

  sudo chgrp www-data *
  ls -l
   
  total 24
  -rwxrwxr-x 1 ptruchon www-data 26 Dec 26 10:24 file1.txt
  -rwxrwxr-x 1 ptruchon www-data 26 Dec 26 10:24 file2.txt

• Edit file1.txt from the local directory.

  ~/gittest/local$ git status
   
  On branch master
  Your branch is up to date with 'origin/master'.
   
  Changes not staged for commit:
    (use "git add <file>..." to update what will be committed)
    (use "git restore <file>..." to discard changes in working directory)
  	modified:   file1.txt
   
  no changes added to commit (use "git add" and/or "git commit -a")

• Commit changes in git:

  git add .
  git commit -m 'changed file1.txt from local'
  git status
   
  On branch master
  Your branch is ahead of 'origin/master' by 1 commit.
    (use "git push" to publish your local commits)
   
  nothing to commit, working tree clean
   
  git log
   
  commit b7d91058fed9fe64c96525a3d0bef56c682ade68 (HEAD -> master)
  Author: Patrick Truchon <patoo@rbox.me>
  Date:   Sun Dec 26 10:45:41 2021 -0800
   
      changed file1.txt from local
   
  commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (origin/master, origin/HEAD)
  Author: Patrick Truchon <patoo@rbox.me>
  Date:   Sun Dec 26 10:21:24 2021 -0800
   
      initial commit on remote