[petsc-dev] Usability

[Jed Brown]

On Mon, Mar 11, 2013 at 6:01 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> master ~/petsc$ git checkout b95f98c
> Note: checking out 'b95f98c'.
>
> You are in 'detached HEAD' state. You can look around, make experimental
> changes and commit them, and you can discard any commits you make in this
> state without impacting any branches by performing another checkout.
>
> If you want to create a new branch to retain commits you create, you may
> do so (now or later) by using -b with the checkout command again. Example:
>
>   git checkout -b new_branch_name
>
> HEAD is now at b95f98c... Merge subtree 'buildsystem/master'
>

Additionally, every place HEAD has been (which includes any commits you
make, etc) is remembered for 90 days (default). So if you commit something
here (with a detached HEAD), then switch away, do other stuff, and later
want to find it, it will still be in the reflog

$ git reflog --grep "something relevant"
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