From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ivan Zorin <ivan.a.zorin@gmail.com>
Subject: Re: how to check remote git repo for updates without pull/fetch
Date: Fri, 19 Dec 2008 19:39:19 +0300
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> does exist some way to check remote git repository for updates without downloading any essential files?
Well, actually, I think, that I've found one of possible soulution already:
First, check remote repo:
$ git ls-remote /path/to/git/repo
<some sha1-hash>	HEAD
...
Then check local repo:
$ cat .git/HEAD
ref: refs/heads/master
$ cat .git/refs/heads/master
<other sha1-hash>
So, if both hashes identical, then current working tree with HEAD, which points to "master", already up-to-dated,
but if they don't, then there is some updates at remote repo.