Re: [PATCH] show_one_mergetag: print non-parent in hex form.

> From: Harald van Dijk <harald@gigawatt.nl>
> 
> When a mergetag names a non-parent, which can occur after a shallow
> clone, its hash was previously printed as raw data. Print it in hex form
> instead.

> +test_expect_success GPG 'log --graph --show-signature for merged tag in shallow clone' '
> +	test_when_finished "git reset --hard && git checkout master" &&
> +	git checkout -b plain-shallow master &&
> +	echo aaa >bar &&
> +	git add bar &&
> +	git commit -m bar_commit &&
> +	git checkout --detach master &&
> +	echo bbb >baz &&
> +	git add baz &&
> +	git commit -m baz_commit &&
> +	git tag -s -m signed_tag_msg signed_tag_shallow &&
> +	hash=$(git rev-parse HEAD) &&
> +	git checkout plain-shallow &&
> +	git merge --no-ff -m msg signed_tag_shallow &&
> +	git clone --depth 1 --no-local . shallow &&
> +	test_when_finished "rm -rf shallow" &&
> +	git -C shallow log --graph --show-signature -n1 plain-shallow >actual &&
> +	grep "tag signed_tag_shallow names a non-parent $hash" actual