1 files changed, 3 insertions, 0 deletions
diff --git a/refs.h b/refs.h
index 43831e9be7..2c854de3fe 100644
--- a/refs.h
+++ b/refs.h
@@ -34,6 +34,9 @@ extern void unlock_ref (struct ref_lock *lock);
 /** Writes sha1 into the ref specified by the lock. **/
 extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
 
+/** Reads log for the value of ref during at_time. **/
+extern int read_ref_at(const char *ref, unsigned long at_time, unsigned char *sha1);
+
 /** Returns 0 if target has the right format for a ref. **/
 extern int check_ref_format(const char *target);