1 files changed, 17 insertions, 0 deletions
diff --git a/packfile.c b/packfile.c
index ee1ab9b804..3d652212c6 100644
--- a/packfile.c
+++ b/packfile.c
@@ -196,6 +196,23 @@ int open_pack_index(struct packed_git *p)
 	return ret;
 }
 
+uint32_t get_pack_fanout(struct packed_git *p, uint32_t value)
+{
+	const uint32_t *level1_ofs = p->index_data;
+
+	if (!level1_ofs) {
+		if (open_pack_index(p))
+			return 0;
+		level1_ofs = p->index_data;
+	}
+
+	if (p->index_version > 1) {
+		level1_ofs += 2;
+	}
+
+	return ntohl(level1_ofs[value]);
+}
+
 static struct packed_git *alloc_packed_git(int extra)
 {
 	struct packed_git *p = xmalloc(st_add(sizeof(*p), extra));