pull-local: Fix regression with absolute paths
pull-local: Fix regression with absolute paths

Don't add cwd unless the path is relative.

leandrosansilva/ostree,resin-io/ostree,resin-io/ostree,gatispaeglis/ostree,gatispaeglis/ostree,sujitfulse/ostree,sujitfulse/ostree,leandrosansilva/ostree,gatispaeglis/ostree,GNOME/ostree,resin-io/ostree,leandrosansilva/ostree,GNOME/ostree,sujitfulse/ostree,gatispaeglis/ostree,resin-io/ostree,sujitfulse/ostree,leandrosansilva/ostree,GNOME/ostree,GNOME/ostree,sujitfulse/ostree,leandrosansilva/ostree,resin-io/ostree,gatispaeglis/ostree,GNOME/ostree,gatispaeglis/ostree