Re: Push tag from shallow clone?

From: Shawn O. Pearce <spearce@spearce.org>
Date: Mar 19, 2009, 18:02 UTC
Message-ID: <20090319180216.GT23521@spearce.org>
In-Reply-To: <2729632a0903191056w4efdbec6hd1656d7b47d0d8a3@mail.gmail.com>

skillzero@gmail.com wrote:

> The documentation for git clone says that if you use --depth=1 to make
> a shallow clone that you can't push it. But I made a shallow clone,
> created a tag, then tried to push that tag and it worked. Am I just
> getting lucky or is it safe to push a tag with a shallow clone?

Yea, you are getting lucky. The tag is easily identified as one object head of the current branch on the remote, and the client is able to produce the pack and send it.

If the remote branch gets modified in the interm, the builder may not be able to deduce what it needs to send, and will attempt to pack a lot more data, potentially finding the missing parents from where it is shallow.

Why not just have a central area on the build server that keeps full clones of everything, and use "git clone -s" or "git clone --reference" in order to create the new work area for the builder?

-- 
Shawn.