#define REF_NODEREF 0x01
extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags);
+/** Close the file descriptor owned by a lock and return the status */
+extern int close_ref(struct ref_lock *lock);
+
+/** Close and commit the ref locked by the lock */
+extern int commit_ref(struct ref_lock *lock);
+
/** Release any lock taken but not written. **/
extern void unlock_ref(struct ref_lock *lock);