From a8328146f2258b0c1d2e36a8493097aa7fa248fd Mon Sep 17 00:00:00 2001
From: Zach Taylor <taylorzr@gmail.com>
Date: Mon, 15 Apr 2019 12:40:35 -0500
Subject: [PATCH 1/3] Clean build directory so old artifacts don't get picked
 up

---
 hooks/checkout | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hooks/checkout b/hooks/checkout
index cb43ab4..46a942b 100755
--- a/hooks/checkout
+++ b/hooks/checkout
@@ -2,4 +2,5 @@
 
 set -euo pipefail
 
-echo "--- Skipping checkout"
+echo "--- Removing any files from previous builds"
+rm -rf *

From ce1070c2c234dc52484685a7bb4ed6bca3d78816 Mon Sep 17 00:00:00 2001
From: Zach Taylor <taylorzr@gmail.com>
Date: Fri, 26 Apr 2019 15:10:30 -0500
Subject: [PATCH 2/3] Better glob syntax according to shellcheck

---
 hooks/checkout | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hooks/checkout b/hooks/checkout
index 46a942b..1d86fcc 100755
--- a/hooks/checkout
+++ b/hooks/checkout
@@ -3,4 +3,4 @@
 set -euo pipefail
 
 echo "--- Removing any files from previous builds"
-rm -rf *
+rm -rf ./*

From 1424d0d60c40304a127d3be22b09aaffd619bef1 Mon Sep 17 00:00:00 2001
From: Zach Taylor <taylorzr@gmail.com>
Date: Fri, 26 Apr 2019 15:15:51 -0500
Subject: [PATCH 3/3] Fix tests and add example

---
 hooks/checkout      |  3 ++-
 tests/checkout.bats | 11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/hooks/checkout b/hooks/checkout
index 1d86fcc..17af985 100755
--- a/hooks/checkout
+++ b/hooks/checkout
@@ -2,5 +2,6 @@
 
 set -euo pipefail
 
-echo "--- Removing any files from previous builds"
+echo "--- Skipping checkout"
+echo "Removing any old artifacts"
 rm -rf ./*
diff --git a/tests/checkout.bats b/tests/checkout.bats
index 0b3a946..4da27ac 100644
--- a/tests/checkout.bats
+++ b/tests/checkout.bats
@@ -23,6 +23,17 @@ post_checkout_hook="$PWD/hooks/post-checkout"
   assert_output --partial "Skipping checkout"
 }
 
+@test "Removes old artifacts {
+  export BUILDKITE_BUILD_CHECKOUT_PATH=$tmp_dir
+  cd "$BUILDKITE_BUILD_CHECKOUT_PATH"
+  touch some_old_artifact
+
+  run "$checkout_hook"
+
+  assert_success
+  refute [ -f some_old_artifact ]
+}
+
 @test "Updates checkout directory when 'cd' is given" {
   export BUILDKITE_BUILD_CHECKOUT_PATH=$tmp_dir
   export BUILDKITE_PLUGIN_SKIP_CHECKOUT_CD="/var"