refs: split `ref_cache` code into separate files

diff --git a/Makefile b/Makefile
index 5f3844e33e0a4977effa3fba3c31f1f2d8125ea8..2f30580cdea0446c93e0ac141e3a3efe39c8e0e8 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -807,6 +807,7 @@ LIB_OBJS += reflog-walk.o
 LIB_OBJS += refs.o
 LIB_OBJS += refs/files-backend.o
 LIB_OBJS += refs/iterator.o
+LIB_OBJS += refs/ref-cache.o
 LIB_OBJS += ref-filter.o
 LIB_OBJS += remote.o
 LIB_OBJS += replace_object.o