1 files changed, 3 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index 2928107bb1..6dcb100a6c 100644
--- a/cache.h
+++ b/cache.h
@@ -1058,4 +1058,7 @@ void overlay_tree_on_cache(const char *tree_name, const char *prefix);
 char *alias_lookup(const char *alias);
 int split_cmdline(char *cmdline, const char ***argv);
 
+/* builtin/merge.c */
+int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
+
 #endif /* CACHE_H */