diff --git a/wiki/git.md b/wiki/git.md
index d473186..0924c6e 100644
--- a/wiki/git.md
+++ b/wiki/git.md
@@ -35,3 +35,6 @@ If you don't need a bloated web-interface a more basic approach is more than eno
 If you need to make changes to a file that are local you can run
 `config update-index --skip-worktree <file>`.
 Following this the file won't show up as having changes from the upstream.
+Note that files tagged with this command are checked out sparsly, so you need
+to watch out for changes yourself if there are any.
+To revert this run `config update-index --no-skip-worktree <file>`.