util/release: Improve git worktree checks

The bash script `genrelnotes` checks for `.git` to be present to
determine whether the current directory is the top directory of a git
worktree. This check is rather weak and doesn't handle many edge cases
like that of a broken gitfile.

Add a proper `git rev-parse` call to check the condition.

Change-Id: I32b06ca982d55fd8e88e55651b6bc53014905823
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23252
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions