clone: do not create remotes/origin nor origin branch in a bare repository.

It is simply pointless, since no merges will ever happen in such
a repository.

Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/git-clone.txt

@@ -62,7 +62,9 @@ OPTIONS
 	Make a 'bare' GIT repository.  That is, instead of
 	creating `<directory>` and placing the administrative
 	files in `<directory>/.git`, make the `<directory>`
-	itself the `$GIT_DIR`. This implies `-n` option.
+	itself the `$GIT_DIR`. This implies `-n` option.  When
+	this option is used, neither the `origin` branch nor the
+	default	`remotes/origin` file is created.
 
 -o <name>::
 	Instead of using the branch name 'origin' to keep track

git-clone.sh

@@ -209,7 +209,7 @@ esac
 
 cd "$D" || exit
 
-if test -f "$GIT_DIR/HEAD"
+if test -f "$GIT_DIR/HEAD" && test -z "$bare"
 then
 	head_points_at=`git-symbolic-ref HEAD`
 	case "$head_points_at" in