codereview: use 'git branch -v' for pending

Change-Id: Ib80b19cf69a15860315b2d7a38baf3b05d693acc
diff --git a/bin/codereview b/bin/codereview
index 6606a5c..ffa0e3c 100755
--- a/bin/codereview
+++ b/bin/codereview
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