+ $ cg clone git://git.sv.gnu.org/gnulib.git
+
+For a read-write checkout you need to have a login on savannah.gnu.org and be
+a member of the gnulib project at http://savannah.gnu.org/projects/gnulib .
+Then, instead of the URL
+ git://git.sv.gnu.org/gnulib
+use the URL
+ ssh://<user>@git.sv.gnu.org/srv/git/gnulib
+where <user> is your login name on savannah.gnu.org.