git-push-wd: Explicitly name ref when creating branch
git-push-wd: Explicitly name ref when creating branch

If you are on a branch with an ambiguous name (e.g. a tag with the same
name exists), git branch will fail. Explicitly name the ref that we are
creating the branch from to avoid this.

Signed-off-by: Ian Munsie <ce389fd2fa887d610219cb85dea6dc9451973e74@gmail.com>

DarkStarSword/junk,DarkStarSword/junk,DarkStarSword/junk,DarkStarSword/junk,DarkStarSword/junk