protecting against git rev-parse silly behavior on unrecognized options
protecting against git rev-parse silly behavior on unrecognized options

lhagan/PlainReader,lhagan/PlainReader,firnny29-cts/helloworld1,jacquesdeklerk/jacquesdeklerk,jacquesdeklerk/jacquesdeklerk,thetrickster/foundation-bc,derekandtereza/derekandtereza.github.com,fady/ant-build-script,lhagan/PlainReader,seanoshea/krissyoshea,jacquesdeklerk/jacquesdeklerk,thetrickster/foundation-bc,scraperwiki/urchin-website,lhagan/PlainReader,h5bp/ant-build-script,thetrickster/foundation-bc,scraperwiki/urchin-website,derekandtereza/derekandtereza.github.com,seanoshea/krissyoshea,lhagan/PlainReader,thetrickster/foundation-bc,scraperwiki/urchin-website