cloning repository from scratch on case sensitive systems

[Trophime]

Hi,
trying to update TOSCA section I tun into a problem.

Cloning into 'book.mso4sc.eu'...
remote: Counting objects: 1048, done.
remote: Total 1048 (delta 0), reused 0 (delta 0), pack-reused 1048
Receiving objects: 100% (1048/1048), 5.62 MiB | 7.73 MiB/s, done.
Resolving deltas: 100% (361/361), done.
Encountered 19 file(s) that should have been pointers, but weren't:
	images/media/d3.1/image10.png
	images/media/d3.1/image11.png
	images/media/d3.1/image12.png
	images/media/d3.1/image13.png
	images/media/d3.1/image14.png
	images/media/d3.1/image15.png
	images/media/d3.1/image16.png
	images/media/d3.1/image17.png
	images/media/d3.1/image18.png
	images/media/d3.1/image19.png
	images/media/d3.1/image2.png
	images/media/d3.1/image20.png
	images/media/d3.1/image21.png
	images/media/d3.1/image22.png
	images/media/d3.1/image23.png
	images/media/d3.1/image24.png
	images/media/d3.1/image25.png
	images/media/d3.1/image3.png
	images/media/d3.1/image4.png

So I tried to make a git lfs pull
At this point I make changes into TOSCA doc (mainly spellchecking)
Now git status gives me:

On branch master
Your branch is up to date with 'origin/master'.

Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

	modified:   images/media/d2.1/image1.PNG
	modified:   images/media/d2.2/image1.PNG
	modified:   images/media/d4.2/image1.PNG

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	modified:   docs/tosca/README.adoc

It seems that PNG files are not under git lfs track at least on case sensitive systems
What shall I do?