diff --git a/WORKSPACE b/WORKSPACE
index bb0cefb..79e5b1a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -82,8 +82,6 @@ http_archive(
     ],
 )
 
-# Placeholder for tink-go http_archive or local_repository.
-
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 
 # Tink Go Google Cloud KMS Deps.
@@ -95,8 +93,6 @@ load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 
 protobuf_deps()
 
-# Placeholder for tink-go dependencies.
-
 # gazelle:repository_macro deps.bzl%tink_go_gcpkms_dependencies
 tink_go_gcpkms_dependencies()
 
diff --git a/kokoro/gcp_ubuntu/bazel/run_tests.sh b/kokoro/gcp_ubuntu/bazel/run_tests.sh
index 524d67d..63b71c2 100644
--- a/kokoro/gcp_ubuntu/bazel/run_tests.sh
+++ b/kokoro/gcp_ubuntu/bazel/run_tests.sh
@@ -14,74 +14,37 @@
 # limitations under the License.
 ################################################################################
 
-# By default when run locally this script runs the command below directly on the
-# host. The CONTAINER_IMAGE variable can be set to run on a custom container
-# image for local testing. E.g.:
+# Builds and tests tink-go-gcpkms using Bazel.
 #
-# CONTAINER_IMAGE="gcr.io/tink-test-infrastructure/linux-tink-go-base:latest" \
-#  sh ./kokoro/gcp_ubuntu/bazel/run_tests.sh
+# The behavior of this script can be modified using the following optional env
+# variables:
 #
-# The user may specify TINK_BASE_DIR as the folder where to look for
-# tink-go-gcpkms and its dependencies. That is:
-#   ${TINK_BASE_DIR}/tink_go
-#   ${TINK_BASE_DIR}/tink_go_gcpkms
-# NOTE: tink_go is fetched from GitHub if not found.
+# - CONTAINER_IMAGE (unset by default): By default when run locally this script
+#   executes tests directly on the host. The CONTAINER_IMAGE variable can be set
+#   to execute tests in a custom container image for local testing. E.g.:
+#
+#   CONTAINER_IMAGE="us-docker.pkg.dev/tink-test-infrastructure/tink-ci-images/linux-tink-go-base:latest" \
+#     sh ./kokoro/gcp_ubuntu/bazel/run_tests.sh
 set -euo pipefail
 
 RUN_COMMAND_ARGS=()
 if [[ -n "${KOKORO_ARTIFACTS_DIR:-}" ]]; then
-  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
-  source \
-    "${TINK_BASE_DIR}/tink_go_gcpkms/kokoro/testutils/go_test_container_images.sh"
+  readonly TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_go_gcpkms"
+  source "./kokoro/testutils/go_test_container_images.sh"
   CONTAINER_IMAGE="${TINK_GO_BASE_IMAGE}"
   RUN_COMMAND_ARGS+=( -k "${TINK_GCR_SERVICE_KEY}" )
 fi
-: "${TINK_BASE_DIR:=$(cd .. && pwd)}"
-readonly TINK_BASE_DIR
 readonly CONTAINER_IMAGE
 
-# If running from the tink_go_gcpkms folder this has no effect.
-cd "${TINK_BASE_DIR}/tink_go_gcpkms"
-
 if [[ -n "${CONTAINER_IMAGE:-}" ]]; then
   RUN_COMMAND_ARGS+=( -c "${CONTAINER_IMAGE}" )
 fi
 
-# Check for dependencies in TINK_BASE_DIR. Any that aren't present will be
-# downloaded.
-readonly GITHUB_ORG="https://github.com/tink-crypto"
-./kokoro/testutils/fetch_git_repo_if_not_present.sh "${TINK_BASE_DIR}" \
-  "${GITHUB_ORG}/tink-go"
-
 # TODO(b/238389921): Run check_go_generated_files_up_to_date.sh after a
 # refactoring that takes into account extensions to tink-go.
 ./kokoro/testutils/copy_credentials.sh "testdata" "gcp"
 
-cp WORKSPACE WORKSPACE.bak
-
-# Replace com_github_tink_crypto_tink_go_v2 with a local one.
-mapfile -d '' TINK_GO_LOCAL_REPO <<'EOF'
-local_repository(\
-    name = "com_github_tink_crypto_tink_go_v2",\
-    path = "../tink_go",\
-)\
-EOF
-readonly TINK_GO_LOCAL_REPO
-
-mapfile -d '' TINK_GO_DEPENDENCIES <<'EOF'
-load("@com_github_tink_crypto_tink_go_v2//:deps.bzl", tink_go_dependencies="go_dependencies")\
-\
-tink_go_dependencies()\
-EOF
-readonly TINK_GO_DEPENDENCIES
-
-sed -i \
-  "s~# Placeholder for tink-go http_archive or local_repository.~${TINK_GO_LOCAL_REPO}~" \
-  WORKSPACE
-sed -i \
-  "s~# Placeholder for tink-go dependencies.~${TINK_GO_DEPENDENCIES}~"\
-  WORKSPACE
-
 MANUAL_TARGETS=()
 # Run manual tests that rely on test data only available via Bazel.
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
@@ -89,12 +52,6 @@ if [[ -n "${KOKORO_ROOT:-}" ]]; then
 fi
 readonly MANUAL_TARGETS
 
-trap cleanup EXIT
-
-cleanup() {
-  mv WORKSPACE.bak WORKSPACE
-}
-
 ./kokoro/testutils/run_command.sh "${RUN_COMMAND_ARGS[@]}" \
   ./kokoro/testutils/run_bazel_tests.sh \
     -t --test_arg=--test.v . "${MANUAL_TARGETS[@]}"
diff --git a/kokoro/gcp_ubuntu/gomod/run_tests.sh b/kokoro/gcp_ubuntu/gomod/run_tests.sh
index 55953c6..90d890a 100644
--- a/kokoro/gcp_ubuntu/gomod/run_tests.sh
+++ b/kokoro/gcp_ubuntu/gomod/run_tests.sh
@@ -14,71 +14,37 @@
 # limitations under the License.
 ################################################################################
 
-# By default when run locally this script runs the command below directly on the
-# host. The CONTAINER_IMAGE variable can be set to run on a custom container
-# image for local testing. E.g.:
+# Builds and tests tink-go-gcpkms using Go tooling.
 #
-# CONTAINER_IMAGE="gcr.io/tink-test-infrastructure/linux-tink-go-base:latest" \
-#  sh ./kokoro/gcp_ubuntu/gomod/run_tests.sh
+# The behavior of this script can be modified using the following optional env
+# variables:
 #
-# The user may specify TINK_BASE_DIR as the folder where to look for
-# tink-go-gcpkms and its dependencies. That is:
-#   ${TINK_BASE_DIR}/tink_go
-#   ${TINK_BASE_DIR}/tink_go_gcpkms
-# NOTE: tink_go is fetched from GitHub if not found.
+# - CONTAINER_IMAGE (unset by default): By default when run locally this script
+#   executes tests directly on the host. The CONTAINER_IMAGE variable can be set
+#   to execute tests in a custom container image for local testing. E.g.:
+#
+#   CONTAINER_IMAGE="us-docker.pkg.dev/tink-test-infrastructure/tink-ci-images/linux-tink-go-base:latest" \
+#     sh ./kokoro/gcp_ubuntu/gomod/run_tests.sh
 set -eEuo pipefail
 
 RUN_COMMAND_ARGS=()
-if [[ -n "${KOKORO_ROOT:-}" ]]; then
-  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
-  source \
-    "${TINK_BASE_DIR}/tink_go_gcpkms/kokoro/testutils/go_test_container_images.sh"
+if [[ -n "${KOKORO_ARTIFACTS_DIR:-}" ]]; then
+  readonly TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_go_gcpkms"
+  source "./kokoro/testutils/go_test_container_images.sh"
   CONTAINER_IMAGE="${TINK_GO_BASE_IMAGE}"
   RUN_COMMAND_ARGS+=( -k "${TINK_GCR_SERVICE_KEY}" )
 fi
-: "${TINK_BASE_DIR:=$(cd .. && pwd)}"
-readonly TINK_BASE_DIR
 readonly CONTAINER_IMAGE
 
-# If running from the tink_go_gcpkms folder this has no effect.
-cd "${TINK_BASE_DIR}/tink_go_gcpkms"
-
 if [[ -n "${CONTAINER_IMAGE:-}" ]]; then
   RUN_COMMAND_ARGS+=( -c "${CONTAINER_IMAGE}" )
 fi
 
-# Check for dependencies in TINK_BASE_DIR. Any that aren't present will be
-# downloaded.
-readonly GITHUB_ORG="https://github.com/tink-crypto"
-./kokoro/testutils/fetch_git_repo_if_not_present.sh "${TINK_BASE_DIR}" \
-  "${GITHUB_ORG}/tink-go"
-
-./kokoro/testutils/copy_credentials.sh "testdata" "gcp"
-
-readonly TINK_GO_MODULE_URL="github.com/tink-crypto/tink-go/v2"
-readonly TINK_GO_GCPKMS_MODULE_URL="github.com/tink-crypto/tink-go-gcpkms"
-readonly TINK_VERSION="$(cat version.bzl | grep ^TINK | cut -f 2 -d \")"
-
-cp go.mod go.mod.bak
-
-cat <<EOF > _do_run_test.sh
-set -euo pipefail
-
-# Modify go.mod locally to use the version of tink-go in ../tink_go.
-go mod edit "-replace=${TINK_GO_MODULE_URL}=../tink_go"
-go mod tidy
-go list -m all | grep tink-go
-./kokoro/testutils/run_go_mod_tests.sh "${TINK_GO_GCPKMS_MODULE_URL}" . \
-  "${TINK_VERSION}" "main"
-EOF
-chmod +x _do_run_test.sh
-
-# Run cleanup on EXIT.
-trap cleanup EXIT
+readonly MODULE_URL="github.com/tink-crypto/tink-go-gcpkms"
+readonly MODULE_VERSION="$(cat version.bzl | grep ^TINK | cut -f 2 -d \")"
 
-cleanup() {
-  mv go.mod.bak go.mod
-  rm -rf _do_run_test.sh
-}
+./kokoro/testutils/run_command.sh "${RUN_COMMAND_ARGS[@]}" \
+  ./kokoro/testutils/run_go_mod_tests.sh "${MODULE_URL}" . \
+    "${MODULE_VERSION}" "main"
 
-./kokoro/testutils/run_command.sh "${RUN_COMMAND_ARGS[@]}" ./_do_run_test.sh
diff --git a/kokoro/macos_external/bazel/run_tests.sh b/kokoro/macos_external/bazel/run_tests.sh
index 46ce670..398ad29 100644
--- a/kokoro/macos_external/bazel/run_tests.sh
+++ b/kokoro/macos_external/bazel/run_tests.sh
@@ -14,47 +14,21 @@
 # limitations under the License.
 ################################################################################
 
-# The user may specify TINK_BASE_DIR as the folder where to look for
-# tink-go-gcpkms dependencies.
-
 set -euo pipefail
 
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
-  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  readonly TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
   cd "${TINK_BASE_DIR}/tink_go_gcpkms"
 fi
 
-: "${TINK_BASE_DIR:=$(cd .. && pwd)}"
-
-# Check for dependencies in TINK_BASE_DIR. Any that aren't present will be
-# downloaded.
-readonly GITHUB_ORG="https://github.com/tink-crypto"
-./kokoro/testutils/fetch_git_repo_if_not_present.sh "${TINK_BASE_DIR}" \
-  "${GITHUB_ORG}/tink-go"
-
 # Sourcing required to update callers environment.
 source ./kokoro/testutils/install_go.sh
-
 echo "Using go binary from $(which go): $(go version)"
 
 # TODO(b/238389921): Run check_go_generated_files_up_to_date.sh after a
 # refactoring that takes into account extensions to tink-go.
-
 ./kokoro/testutils/copy_credentials.sh "testdata" "gcp"
 
-# Replace com_github_tink_crypto_tink_go_v2 with a local one.
-grep -r "com_github_tink_crypto_tink_go_v2" -l --include="*.bazel"  . \
-  | xargs sed -i '.bak' \
-      "s~com_github_tink_crypto_tink_go_v2~com_github_tink_crypto_tink_go_local~g"
-
-sed -i '.bak' \
-  's~workspace(name = "tink_go_gcpkms")~workspace(name = "tink_go_gcpkms")\
-\
-local_repository(\
-    name = "com_github_tink_crypto_tink_go_local",\
-    path = "'"${TINK_BASE_DIR}"'/tink_go",\
-)~' WORKSPACE
-
 MANUAL_TARGETS=()
 # Run manual tests that rely on test data only available via Bazel.
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
@@ -62,7 +36,5 @@ if [[ -n "${KOKORO_ROOT:-}" ]]; then
 fi
 readonly MANUAL_TARGETS
 
-./kokoro/testutils/run_bazel_tests.sh \
-  -t --test_arg=--test.v . "${MANUAL_TARGETS[@]}"
-
-mv WORKSPACE.bak WORKSPACE
+./kokoro/testutils/run_bazel_tests.sh -t --test_arg=--test.v . \
+  "${MANUAL_TARGETS[@]}"
diff --git a/kokoro/macos_external/gomod/run_tests.sh b/kokoro/macos_external/gomod/run_tests.sh
index b0c0e91..7b6d479 100644
--- a/kokoro/macos_external/gomod/run_tests.sh
+++ b/kokoro/macos_external/gomod/run_tests.sh
@@ -14,51 +14,19 @@
 # limitations under the License.
 ################################################################################
 
-# The user may specify TINK_BASE_DIR as the folder where to look for
-# tink-go-gcpkms dependencies.
-
 set -euo pipefail
 
-TINK_GO_GCPKMS_PROJECT_PATH="$(pwd)"
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
-  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
-  TINK_GO_GCPKMS_PROJECT_PATH="${TINK_BASE_DIR}/tink_go_gcpkms"
-  cd "${TINK_GO_GCPKMS_PROJECT_PATH}"
+  readonly TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_go_gcpkms"
 fi
-readonly TINK_GO_GCPKMS_PROJECT_PATH
-
-: "${TINK_BASE_DIR:=$(cd .. && pwd)}"
 
-# Check for dependencies in TINK_BASE_DIR. Any that aren't present will be
-# downloaded.
-readonly GITHUB_ORG="https://github.com/tink-crypto"
-./kokoro/testutils/fetch_git_repo_if_not_present.sh "${TINK_BASE_DIR}" \
-  "${GITHUB_ORG}/tink-go"
-
-./kokoro/testutils/copy_credentials.sh "testdata" "gcp"
 # Sourcing required to update callers environment.
 source ./kokoro/testutils/install_go.sh
-
 echo "Using go binary from $(which go): $(go version)"
 
-readonly TINK_GO_MODULE_URL="github.com/tink-crypto/tink-go/v2"
-readonly TINK_GO_GCPKMS_MODULE_URL="github.com/tink-crypto/tink-go-gcpkms"
-readonly TINK_VERSION="$(cat ${TINK_GO_GCPKMS_PROJECT_PATH}/version.bzl \
-                        | grep ^TINK \
-                        | cut -f 2 -d \")"
-
-
-cp go.mod go.mod.bak
-
-# Modify go.mod locally to use the version of tink-go in TINK_BASE_DIR/tink_go.
-go mod edit "-replace=${TINK_GO_MODULE_URL}=${TINK_BASE_DIR}/tink_go"
-go mod tidy
-go list -m all | grep tink-go
-
-./kokoro/testutils/run_go_mod_tests.sh \
-  "${TINK_GO_GCPKMS_MODULE_URL}" \
-  "${TINK_GO_GCPKMS_PROJECT_PATH}" \
-  "${TINK_VERSION}" \
-  "main"
+readonly MODULE_URL="github.com/tink-crypto/tink-go-gcpkms"
+readonly MODULE_VERSION="$(cat version.bzl | grep ^TINK | cut -f 2 -d \")"
 
-mv go.mod.bak go.mod
+./kokoro/testutils/run_go_mod_tests.sh "${MODULE_URL}" "$(pwd)" \
+  "${MODULE_VERSION}" "main"