Re: How to create a new branch based on a tag?

From: Martin Langhoff <martin.langhoff@gmail.com>
Date: Oct 21, 2005, 03:37 UTC
Message-ID: <46a038f90510202037l7dd40271qcc0634295e092068@mail.gmail.com>
In-Reply-To: <435901F7.9020509@ust.hk>

On 10/22/05, Ben Lau <benlau@ust.hk> wrote:

Show 10 quoted lines

> Hi,
>
>    I would like to create a branch of my own work based on a specific
> kernel version(i.e
> v2.6.11). I tried with:
>
>  > git-branch my2.6.11 v2.6.11
> error: Object 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c is a tree, not a
> commit
> fatal: Needed a single revision

What you're after is

   git-rev-parse --verify <tagname>^0  > .refs/heads/mynewbranch

"branches" are very lightweight -- it's a ref containing the SHA1 of the commit you want it to be at. So if you find the SHA1 of the commit in gitk or wherever, just

  echo SHA1 > .refs/heads/mynewbranch

and you're sorted. Do git-checkout to switch to it.

cheers,

martin