docs: push new commit instead of amending Renovate's commit (#23833)

docs/usage/updating-rebasing.md

@@ -22,8 +22,13 @@ Instead, Renovate reapplies all updates into a new commit based off of the head
 ## No rebasing if you have made edits
 
 First of all, here is the one time when Renovate _won't_ update branches.
-If you edit a Renovate branch directly (e.g. to make a code fix to allow tests to pass again) then Renovate stops all updates of that branch.
-It is up to you to either finish the job and merge the PR, or rename it and close it so that Renovate can take back over again.
+If you push a new commit to a Renovate branch, for example to fix your code so the tests pass, then Renovate stops all updates of that branch.
+It is up to you to either finish the job and merge the PR, or rename it and close it so that Renovate can take over again.
+
+<!-- prettier-ignore -->
+!!! warning
+    Do _not_ amend Renovate's commits, because Renovate will rebase over your amended commit.
+    Keep your work safe and always push your own _new_ commit to any Renovate branch.
 
 ## Rebasing conflicted PRs