diff --git a/cdk/kittyhawk/test/deployment.test.ts b/cdk/kittyhawk/test/deployment.test.ts
index eca1c37e..685c844f 100644
--- a/cdk/kittyhawk/test/deployment.test.ts
+++ b/cdk/kittyhawk/test/deployment.test.ts
@@ -37,3 +37,17 @@ test("Deployment -- Default", () => chartTest(buildDeploymentDefault));
 test("Container -- Default", () => chartTest(buildContainerDefault));
 test("Container -- No Git Sha", () =>
   failingTestNoGitSha(buildContainerDefault));
+
+export const failingContainerTestNoGitSha = (_: (scope: Construct) => void) => {
+  const { GIT_SHA, ...env } = process.env;
+
+  process.env = {
+    ...env,
+    RELEASE_NAME: "RELEASE_NAME",
+    AWS_ACCOUNT_ID: "TEST_AWS_ACCOUNT_ID",
+  };
+
+  expect(() => {
+    buildContainerDefault;
+  }).toThrowError("process.exit: 1");
+};
diff --git a/cdk/kittyhawk/test/utils.ts b/cdk/kittyhawk/test/utils.ts
index fe85baa6..b3ca98d5 100644
--- a/cdk/kittyhawk/test/utils.ts
+++ b/cdk/kittyhawk/test/utils.ts
@@ -46,9 +46,13 @@ const mockConsoleError = jest.spyOn(console, "error").mockImplementation(() => {
 });
 
 export const failingTestNoGitSha = (_: (scope: Construct) => void) => {
-  process.env.RELEASE_NAME = "RELEASE_NAME";
-  process.env.GIT_SHA = "";
-  process.env.AWS_ACCOUNT_ID = "TEST_AWS_ACCOUNT_ID";
+  const { GIT_SHA, ...env } = process.env;
+
+  process.env = {
+    ...env,
+    RELEASE_NAME: "RELEASE_NAME",
+    AWS_ACCOUNT_ID: "TEST_AWS_ACCOUNT_ID",
+  };
 
   expect(() => {
     const app = Testing.app();