-Pull the latest changes from the parent repository. This command works
-by popping all the patches from the stack, pulling the changes in the
-parent repository, setting the base of the stack to the latest parent
-HEAD and pusing the patches back (unless '--nopush' is specified). The
-'push' operation can fail if there are conflicts. They need to be
-resolved and the patch pushed again. The URL of the parent repository
-is specified in the .git/branches/<head> file.
+Pull the latest changes from the given repository (defaulting to
+'origin'). This command works by popping all the patches from the
+stack, pulling the changes in the parent repository, setting the base
+of the stack to the latest parent HEAD and pushing the patches back
+(unless '--nopush' is specified). The 'push' operation can fail if
+there are conflicts. They need to be resolved and the patch pushed
+again.