exe/git-wip in git-wip-0.5 vs exe/git-wip in git-wip-0.6

@@ -15,10 +15,10 @@
   issue_number = ''
   issue_title = "Fix #{branch_name}"
 end
 
 <<`SHELL`
-  git pull --rebase origin develop
+  git pull --rebase
   git checkout -b #{branch_name}
   git commit --allow-empty -m "#{issue_number} [ci skip][init]"
   git push -u origin HEAD
 SHELL
 `open $(echo "#{issue_title}" | hub pull-request --draft --file -)`