Fix: `git:pull` would fail if ORIGIN/HEAD known.
Fix: `git:pull` would fail if ORIGIN/HEAD known.

Closes #246.

jmanuel1/GitSavvy,asfaltboy/GitSavvy,stoivo/GitSavvy,stoivo/GitSavvy,divmain/GitSavvy,ddevlin/GitSavvy,ddevlin/GitSavvy,asfaltboy/GitSavvy,asfaltboy/GitSavvy,stoivo/GitSavvy,jmanuel1/GitSavvy,divmain/GitSavvy,ddevlin/GitSavvy,divmain/GitSavvy