git-p4: explicitly specify that HEAD is a revision

diff --git a/git-p4.py b/git-p4.py
index cdfa2df5d8e0add0363f3e246362b437b72c4d58..8d11b25ae37761a9cfea263bd9a5591c0495fc1c 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -3086,7 +3086,7 @@ def rebase(self):
         print "Rebasing the current branch onto %s" % upstream
         oldHead = read_pipe("git rev-parse HEAD").strip()
         system("git rebase %s" % upstream)
-        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
+        system("git diff-tree --stat --summary -M %s HEAD --" % oldHead)
         return True
 
 class P4Clone(P4Sync):