1 files changed, 6 insertions, 0 deletions
diff --git a/read-cache.c b/read-cache.c
index 22ab8b5b61..92eb15c000 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -2625,3 +2625,9 @@ void stat_validity_update(struct stat_validity *sv, int fd)
 		fill_stat_data(sv->sd, &st);
 	}
 }
+
+void move_index_extensions(struct index_state *dst, struct index_state *src)
+{
+	dst->untracked = src->untracked;
+	src->untracked = NULL;
+}