<repository>::
	The "remote" repository to pull from.  One of the
	following notations can be used to name the repository
	to pull from:

		Rsync URL
			rsync://remote.machine/path/to/repo.git/

		HTTP(s) URL
			http://remote.machine/path/to/repo.git/

		GIT URL
			git://remote.machine/path/to/repo.git/
			remote.machine:/path/to/repo.git/

		Local directory
			/path/to/repo.git/

	In addition to that, as a short-hand, the name of a file
	in $GIT_DIR/branches directory can be specified; the
	named file should contain a single line, a URL in one of
	the above formats, optionally followed by a hash '#' and
	the name of remote head.

<head>::
	The remote head name to fetch from.  That is, make the
	objects reachable from the commit recorded in
	$GIT_DIR/refs/heads/<head> in the remote repository
	available locally.

tag <tag>::
	The remote head tag to fetch from.  That is, make the
	objects reachable from the commit recorded in
	$GIT_DIR/refs/tags/<tag> in the remote repository
	available locally.