object/fetch: Use proper errors

1 files changed, 3 insertions, 3 deletions

diff --git a/object/fetch/exact_tree.go b/object/fetch/exact_tree.go
index 71d4c2b9..8bfc87ea 100644
--- a/object/fetch/exact_tree.go
+++ b/object/fetch/exact_tree.go
@@ -1,11 +1,11 @@
 package fetch
 
 import (
-	"fmt"
-
+	giterrors "codeberg.org/lindenii/furgit/errors"
 	objectid "codeberg.org/lindenii/furgit/object/id"
 	"codeberg.org/lindenii/furgit/object/stored"
 	"codeberg.org/lindenii/furgit/object/tree"
+	objecttype "codeberg.org/lindenii/furgit/object/type"
 )
 
 // ExactTree reads, parses, and wraps the tree at id.
@@ -19,7 +19,7 @@ func (r *Fetcher) ExactTree(id objectid.ObjectID) (*stored.Stored[*tree.Tree], e
 
 	tree, ok := parsed.(*tree.Tree)
 	if !ok {
-		return nil, fmt.Errorf("object/fetch: expected tree object %s, got %v", id, parsed.ObjectType())
+		return nil, &giterrors.ObjectTypeError{OID: id, Got: parsed.ObjectType(), Want: objecttype.TypeTree}
 	}
 
 	return stored.New(id, tree), nil