3 files changed, 7 insertions, 4 deletions
diff --git a/plumbing/format/index/decoder.go b/plumbing/format/index/decoder.go
index 79d0b9e..036b636 100644
--- a/plumbing/format/index/decoder.go
+++ b/plumbing/format/index/decoder.go
@@ -188,7 +188,7 @@ func (d *Decoder) doReadEntryNameV4() (string, error) {
 
 func (d *Decoder) doReadEntryName(len uint16) (string, error) {
 	name := make([]byte, len)
-	_, err := io.ReadFull(d.r, name[:])
+	_, err := io.ReadFull(d.r, name)
 
 	return string(name), err
 }
@@ -390,7 +390,9 @@ func (d *treeExtensionDecoder) readEntry() (*TreeEntry, error) {
 
 	e.Trees = i
 	_, err = io.ReadFull(d.r, e.Hash[:])
-
+	if err != nil {
+		return nil, err
+	}
 	return e, nil
 }
 
diff --git a/plumbing/format/index/decoder_test.go b/plumbing/format/index/decoder_test.go
index 4e47dde..39ab336 100644
--- a/plumbing/format/index/decoder_test.go
+++ b/plumbing/format/index/decoder_test.go
@@ -6,8 +6,8 @@ import (
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/filemode"
 
+	fixtures "github.com/go-git/go-git-fixtures/v4"
 	. "gopkg.in/check.v1"
-	"github.com/go-git/go-git-fixtures/v4"
 )
 
 func Test(t *testing.T) { TestingT(t) }
diff --git a/plumbing/format/index/encoder_test.go b/plumbing/format/index/encoder_test.go
index 17585a0..b7a73cb 100644
--- a/plumbing/format/index/encoder_test.go
+++ b/plumbing/format/index/encoder_test.go
@@ -5,9 +5,10 @@ import (
 	"strings"
 	"time"
 
+	"github.com/go-git/go-git/v5/plumbing"
+
 	"github.com/google/go-cmp/cmp"
 	. "gopkg.in/check.v1"
-	"github.com/go-git/go-git/v5/plumbing"
 )
 
 func (s *IndexSuite) TestEncode(c *C) {