doc: make clear what can happen if rewrite-tracking isn't disabled if it is not desired.

Triggered by this `onefetch` PR: o2sh/onefetch#1093

Author: Byron

gix/src/object/tree/diff/mod.rs

@@ -34,6 +34,10 @@ impl<'repo> Tree<'repo> {
     ///
     /// It's highly recommended to set an object cache to avoid extracting the same object multiple times.
     /// By default, similar to `git diff`, rename tracking will be enabled if it is not configured.
+    ///
+    /// Note that if a clone with `--filter=blob=none` was created, rename tracking may fail as it might
+    /// try to access blobs to compute a similarity metric. Thus, it's more compatible to turn rewrite tracking off
+    /// using [`Platform::track_rewrites()`].
     #[allow(clippy::result_large_err)]
     pub fn changes<'a>(&'a self) -> Result<Platform<'a, 'repo>, rewrites::Error> {
         Ok(Platform {