diff --git a/gitcheckup.py b/gitcheckup.py
index 6dd2d26..d2ea5ec 100644
--- a/gitcheckup.py
+++ b/gitcheckup.py
@@ -72,7 +72,7 @@ def git_merge_base():
     return check_output(command)
 
 def git_rev_parse(rev):
-    command = [GIT, 'rev-parse', '@{u}']
+    command = [GIT, 'rev-parse', rev]
     return check_output(command)
 
 def git_status():