Modify Kokoro test scripts to add support for GitHub tests.

PiperOrigin-RevId: 470988809
Change-Id: I5ae6a69a2bd8a73a7d996e0ec297ab55b50d6e9b
diff --git a/kokoro/gcp_ubuntu/bazel/run_tests.sh b/kokoro/gcp_ubuntu/bazel/run_tests.sh
index b934727..f4ce273 100644
--- a/kokoro/gcp_ubuntu/bazel/run_tests.sh
+++ b/kokoro/gcp_ubuntu/bazel/run_tests.sh
@@ -18,7 +18,8 @@
 
 
 if [[ -n "${KOKORO_ROOT:-}" ]] ; then
-  cd "${KOKORO_ARTIFACTS_DIR}/git/tink_java"
+  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_java"
   use_bazel.sh "$(cat .bazelversion)"
 fi
 
diff --git a/kokoro/gcp_ubuntu/examples/bazel/run_tests.sh b/kokoro/gcp_ubuntu/examples/bazel/run_tests.sh
index 6e64cf3..9221b09 100644
--- a/kokoro/gcp_ubuntu/examples/bazel/run_tests.sh
+++ b/kokoro/gcp_ubuntu/examples/bazel/run_tests.sh
@@ -18,7 +18,8 @@
 
 # If we are running on Kokoro cd into the repository.
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
-  cd "${KOKORO_ARTIFACTS_DIR}/git/tink_java"
+  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_java"
   use_bazel.sh "$(cat examples/.bazelversion)"
 fi
 
diff --git a/kokoro/macos_external/bazel/run_tests.sh b/kokoro/macos_external/bazel/run_tests.sh
index 8de75b4..0c3b39c 100644
--- a/kokoro/macos_external/bazel/run_tests.sh
+++ b/kokoro/macos_external/bazel/run_tests.sh
@@ -22,7 +22,8 @@
 export COURSIER_OPTS="-Djava.net.preferIPv6Addresses=true"
 
 if [[ -n "${KOKORO_ROOT:-}" ]] ; then
-  cd "${KOKORO_ARTIFACTS_DIR}/git/tink_java"
+  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_java"
   use_bazel.sh "$(cat .bazelversion)"
 fi
 
diff --git a/kokoro/macos_external/examples/bazel/run_tests.sh b/kokoro/macos_external/examples/bazel/run_tests.sh
index e2141a1..1c41a99 100644
--- a/kokoro/macos_external/examples/bazel/run_tests.sh
+++ b/kokoro/macos_external/examples/bazel/run_tests.sh
@@ -23,7 +23,8 @@
 
 # If we are running on Kokoro cd into the repository.
 if [[ -n "${KOKORO_ROOT:-}" ]]; then
-  cd "${KOKORO_ARTIFACTS_DIR}/git/tink_java"
+  TINK_BASE_DIR="$(echo "${KOKORO_ARTIFACTS_DIR}"/git*)"
+  cd "${TINK_BASE_DIR}/tink_java"
   use_bazel.sh "$(cat examples/.bazelversion)"
 fi