faq.md

@@ -412,6 +412,9 @@ https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History
 For non-trivial cases of rewriting, here's a versatile tool : 
 https://github.com/newren/git-filter-repo/
 
+A step by step tutorial based on git filter-repo:
+https://docs.gitlab.com/17.6/ee/topics/git/repository.html#purge-files-from-repository-history
+
 For specifically deleting objects from LFS :
 https://docs.gitlab.com/ee/topics/git/lfs/#removing-objects-from-lfs