message: store git hash of ot3-firmware repo, not opentrons monorepo
diff: #!/bin/sh
  -GIT_HASH=$(git rev-parse --short=8 HEAD)
  TEMP_DIR_NAME="./ot3-firmware"
  TAR_NAME="$TEMP_DIR_NAME"
  @@ -19,6 +18,7 @@ FW_PATH_GRIPPER="$REPO_DIR/build-cross/gripper/firmware/gripper-rev1.hex"
  # build all the firmware
  cd "$REPO_DIR" || cd "$THIS_DIR" || exit
  +GIT_HASH=$(git rev-parse --short=8 HEAD)
  cmake --preset=cross .
  cmake --build --preset=gantry-x --target=gantry-x-rev1-flash || true
  cmake --build --preset=gantry-y --target=gantry-y-rev1-flash || true
  