diff --git a/pkg/source/git.go b/pkg/source/git.go
index 51a6afe2..23bd0f73 100644
--- a/pkg/source/git.go
+++ b/pkg/source/git.go
@@ -300,6 +300,6 @@ func (d *billyDirFile) ReadDir(n int) ([]fs.DirEntry, error) {
 	return entries[:n], err
 }
 
-func (d billyDirFile) Read(data []byte) (int, error) {
+func (d billyDirFile) Read(_ []byte) (int, error) {
 	return 0, &fs.PathError{Op: "read", Path: d.path, Err: syscall.EISDIR}
 }