useful in the future for compensating for some git bugs or such,
therefore such a usage is permitted.
-*NOTE*: This command honors `.git/info/grafts` and `.git/refs/replace/`.
+*NOTE*: This command honors `.git/info/grafts` file and refs in
+the `refs/replace/` namespace.
If you have any grafts or replacement refs defined, running this command
will make them permanent.