ensure we don't create an empty SHA for a parent
ensure we don't create an empty SHA for a parent

say25/desktop,shiftkey/desktop,gengjiawen/desktop,j-f1/forked-desktop,say25/desktop,kactus-io/kactus,j-f1/forked-desktop,desktop/desktop,say25/desktop,desktop/desktop,kactus-io/kactus,artivilla/desktop,hjobrien/desktop,BugTesterTest/desktops,artivilla/desktop,hjobrien/desktop,desktop/desktop,gengjiawen/desktop,desktop/desktop,BugTesterTest/desktops,j-f1/forked-desktop,kactus-io/kactus,BugTesterTest/desktops,gengjiawen/desktop,hjobrien/desktop,shiftkey/desktop,artivilla/desktop,BugTesterTest/desktops,gengjiawen/desktop,artivilla/desktop,j-f1/forked-desktop,shiftkey/desktop,say25/desktop,shiftkey/desktop,hjobrien/desktop,kactus-io/kactus