--- a/dav/sync.h	Sun Aug 11 08:58:58 2019 +0200
+++ b/dav/sync.h	Sun Aug 11 10:57:25 2019 +0200
@@ -152,6 +152,9 @@
         DavResource *remote,
         LocalResource *res);
 int local_resource_load_metadata(SyncDirectory *dir, LocalResource *res);
+
+void local_resource_set_etag(LocalResource *local, const char *etag);
+
 char* resource_local_path(DavResource *res);
 
 size_t resource_get_blocksize(SyncDirectory *dir, LocalResource *local, DavResource *res, off_t filesize);