- Set pre-commit hooks version using tags instead of hashes.

- Added clean target (use git clean).
- Set shell parameters using set instead of appending to the shabang
line.
- Clean beforing testing in pre-commit.

.pre-commit-config.yaml

 -   repo: git://github.com/pre-commit/pre-commit-hooks
-    sha: 97b88d9610bcc03982ddac33caba98bb2b751f5f
+    sha: v0.7.1
     hooks:
     -   id: check-added-large-files
     -   id: check-yaml
     -   id: check-merge-conflict
 -   repo: https://www.shore.co.il/git/shell-pre-commit/
-    sha: v0.1.0
+    sha: v0.3.0
     hooks:
     -   id: shell-lint
         files: ssh-ca
@@ -14,5 +14,5 @@
     -   id: test
         name: make test
         language: system
-        entry: make test
+        entry: make clean test
         files: ssh-ca|Makefile

Makefile

-.PHONY: install test
+.PHONY: install test clean
 
 USERNAME = $$(whoami)
 
+clean:
+	git clean -fdx
+
 test: ssh_config sshd_config CA CA.pub users/$(USERNAME) hosts/localhost known_hosts
 	$$(PATH=$$PATH:/usr/local/sbin:/usr/sbin:/sbin which sshd) -f sshd_config
 	test "$$(ssh -F ssh_config test whoami)" = "$$USER"

ssh-ca

-#!/bin/sh -e
+#!/bin/sh
+set -eu
 
 error () {
     echo "$1"