[release-branches] Fix working directory (#2298)

* Fix working directory.

* Build the Docker image using the latest commit on the invocation branch.

* We need a Docker image with the same SHA later in the process.

Author: LukeMathWalker

tools/ci-scripts/upgrade-gradle-properties

@@ -26,5 +26,5 @@ pushd "${ARTIFACTS_DIR}"
 git clone "${SMITHY_RS_DIR}"
 # Copy over the original remotes so that it's possible to push to `origin`
 cp "${SMITHY_RS_DIR}/.git/config" smithy-rs/.git/config
-git status
+git -C smithy-rs status
 popd