Re: [PATCH] New git-seek command with documentation and test.

Not heretical. How do you intend to switch branches now?

Point .git/HEAD at the branch like usual.
.git/HEAD would not be a symref *only* when on the unnamed temporary
branch (which doesn't accept commits).

And how do you intend to record the starting point of git-seek to
which you want to return to?

Te same way it's done now for git-seek or git-bisect: by copying the
old HEAD to a temporary location like .git/head-name.

All leads back to .git/HEAD pointing to a branch (or whatever 
you want to call it).

In the usual case, yes it should.  Any time you want to be able to
develop on a branch, you need .git/HEAD pointing to a branch.
You only make it point to a commit directly is when exploring the
history with no intention of developing from it.

(Note that you can easily change your mind with a simple
"git checkout -b <branch>".)

And BTW, .git/HEAD is no symlink these days, but a symref.

Yes, I'm sorry; I was just being lazy with my terminology.