1 files changed, 1 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index b8e3d9bfac..958c96e14d 100644
--- a/cache.h
+++ b/cache.h
@@ -229,6 +229,7 @@ extern int has_pack_index(const unsigned char *sha1);
 extern int get_sha1(const char *str, unsigned char *sha1);
 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
 extern char *sha1_to_hex(const unsigned char *sha1);	/* static buffer result! */
+extern int read_ref(const char *filename, unsigned char *sha1);
 
 /* General helper functions */
 extern void usage(const char *err) NORETURN;