kmx.io/rbpkg

diff --git a/bin/rbpkg b/bin/rbpkg
index 411f2e0..77e94fc 100755
--- a/bin/rbpkg
+++ b/bin/rbpkg
@@ -77,8 +77,7 @@ def rbpkg
   when "pull"
     Rbpkg.pull(pkg, tree)
   when "checkout"
-    branch = shift()
-    Rbpkg.checkout(branch, pkg, tree)
+    Rbpkg.checkout(pkg, tree)
   when "configure"
     Rbpkg.configure(pkg, tree)
   when "clean-configure"