diff --git a/go.mod b/go.mod
index e455f157..ef0efb3f 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.24.1
 
 require (
 	github.com/bmatcuk/doublestar/v4 v4.9.1
-	github.com/go-git/go-git/v5 v5.16.3
+	github.com/go-git/go-git/v5 v5.16.4
 	github.com/hashicorp/go-retryablehttp v0.7.8
 	github.com/iancoleman/strcase v0.3.0
 	github.com/launchdarkly/json-patch v0.0.0-20180720210516-dd68d883319f
diff --git a/go.sum b/go.sum
index c47341ae..1fc235a9 100644
--- a/go.sum
+++ b/go.sum
@@ -89,8 +89,8 @@ github.com/go-git/go-billy/v5 v5.6.2 h1:6Q86EsPXMa7c3YZ3aLAQsMA0VlWmy43r6FHqa/UN
 github.com/go-git/go-billy/v5 v5.6.2/go.mod h1:rcFC2rAsp/erv7CMz9GczHcuD0D32fWzH+MJAU+jaUU=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
-github.com/go-git/go-git/v5 v5.16.3 h1:Z8BtvxZ09bYm/yYNgPKCzgWtaRqDTgIKRgIRHBfU6Z8=
-github.com/go-git/go-git/v5 v5.16.3/go.mod h1:4Ge4alE/5gPs30F2H1esi2gPd69R0C39lolkucHBOp8=
+github.com/go-git/go-git/v5 v5.16.4 h1:7ajIEZHZJULcyJebDLo99bGgS0jRrOxzZG4uCk2Yb2Y=
+github.com/go-git/go-git/v5 v5.16.4/go.mod h1:4Ge4alE/5gPs30F2H1esi2gPd69R0C39lolkucHBOp8=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
diff --git a/vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go b/vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go
index 9237a743..136c3e2a 100644
--- a/vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go
+++ b/vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"io"
 	"sort"
+	"sync"
 
 	encbin "encoding/binary"
 
@@ -57,8 +58,9 @@ type MemoryIndex struct {
 	PackfileChecksum [hash.Size]byte
 	IdxChecksum      [hash.Size]byte
 
-	offsetHash       map[int64]plumbing.Hash
-	offsetHashIsFull bool
+	offsetHash      map[int64]plumbing.Hash
+	offsetBuildOnce sync.Once
+	mu              sync.RWMutex
 }
 
 var _ Index = (*MemoryIndex)(nil)
@@ -126,13 +128,13 @@ func (idx *MemoryIndex) FindOffset(h plumbing.Hash) (int64, error) {
 
 	offset := idx.getOffset(k, i)
 
-	if !idx.offsetHashIsFull {
-		// Save the offset for reverse lookup
-		if idx.offsetHash == nil {
-			idx.offsetHash = make(map[int64]plumbing.Hash)
-		}
-		idx.offsetHash[int64(offset)] = h
+	// Save the offset for reverse lookup
+	idx.mu.Lock()
+	if idx.offsetHash == nil {
+		idx.offsetHash = make(map[int64]plumbing.Hash)
 	}
+	idx.offsetHash[int64(offset)] = h
+	idx.mu.Unlock()
 
 	return int64(offset), nil
 }
@@ -173,20 +175,17 @@ func (idx *MemoryIndex) FindHash(o int64) (plumbing.Hash, error) {
 	var hash plumbing.Hash
 	var ok bool
 
-	if idx.offsetHash != nil {
-		if hash, ok = idx.offsetHash[o]; ok {
-			return hash, nil
-		}
+	var genErr error
+	idx.offsetBuildOnce.Do(func() {
+		genErr = idx.genOffsetHash()
+	})
+	if genErr != nil {
+		return plumbing.ZeroHash, genErr
 	}
 
-	// Lazily generate the reverse offset/hash map if required.
-	if !idx.offsetHashIsFull || idx.offsetHash == nil {
-		if err := idx.genOffsetHash(); err != nil {
-			return plumbing.ZeroHash, err
-		}
-
-		hash, ok = idx.offsetHash[o]
-	}
+	idx.mu.RLock()
+	hash, ok = idx.offsetHash[o]
+	idx.mu.RUnlock()
 
 	if !ok {
 		return plumbing.ZeroHash, plumbing.ErrObjectNotFound
@@ -202,8 +201,7 @@ func (idx *MemoryIndex) genOffsetHash() error {
 		return err
 	}
 
-	idx.offsetHash = make(map[int64]plumbing.Hash, count)
-	idx.offsetHashIsFull = true
+	offsetHash := make(map[int64]plumbing.Hash, count)
 
 	var hash plumbing.Hash
 	i := uint32(0)
@@ -212,11 +210,15 @@ func (idx *MemoryIndex) genOffsetHash() error {
 		for secondLevel := uint32(0); i < fanoutValue; i++ {
 			copy(hash[:], idx.Names[mappedFirstLevel][secondLevel*objectIDLength:])
 			offset := int64(idx.getOffset(mappedFirstLevel, int(secondLevel)))
-			idx.offsetHash[offset] = hash
+			offsetHash[offset] = hash
 			secondLevel++
 		}
 	}
 
+	idx.mu.Lock()
+	idx.offsetHash = offsetHash
+	idx.mu.Unlock()
+
 	return nil
 }
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 3c2f42de..6e6f5d09 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -94,7 +94,7 @@ github.com/go-git/go-billy/v5/helper/polyfill
 github.com/go-git/go-billy/v5/memfs
 github.com/go-git/go-billy/v5/osfs
 github.com/go-git/go-billy/v5/util
-# github.com/go-git/go-git/v5 v5.16.3
+# github.com/go-git/go-git/v5 v5.16.4
 ## explicit; go 1.23.0
 github.com/go-git/go-git/v5
 github.com/go-git/go-git/v5/config