diff --git a/esmvaltool/utils/recipe_test_workflow/app/get_esmval/bin/clone_latest_esmval.sh b/esmvaltool/utils/recipe_test_workflow/app/get_esmval/bin/clone_latest_esmval.sh
index 331eada6c3..8a40b1edc7 100755
--- a/esmvaltool/utils/recipe_test_workflow/app/get_esmval/bin/clone_latest_esmval.sh
+++ b/esmvaltool/utils/recipe_test_workflow/app/get_esmval/bin/clone_latest_esmval.sh
@@ -12,8 +12,15 @@ if [[ -d ${ESMVALCORE_DIR} ]]; then
     rm -rf "${ESMVALCORE_DIR}"
 fi
 
-# Checkout the specified branch for ESMValCore and ESMValTool. Use the
+# Checkout the specified branch for ESMValCore and ESMValTool to a `src` dir. Use the
 # quiet ('-q') option to prevent the progress status from being reported
 # (which is done via done via 'stderr').
-git clone -q -b "${BRANCH}" "${ESMVALTOOL_URL}" "${ESMVALTOOL_DIR}"
-git clone -q -b "${BRANCH}" "${ESMVALCORE_URL}" "${ESMVALCORE_DIR}"
+git clone -q -b "${BRANCH}" "${ESMVALTOOL_URL}" "${ESMVALTOOL_SOURCE_DIR}"
+git clone -q -b "${BRANCH}" "${ESMVALCORE_URL}" "${ESMVALCORE_SOURCE_DIR}"
+
+# Copy ESMValCore and ESMValTool into 'lib/python', adding them to the PYTHONPATH.
+# 'pip install' does this and also triggers `setuptools-scm` to increment the
+# package version number. Otherwise `version` returns the last tagged
+# release, not the current development version.
+rtw-env pip install "${ESMVALTOOL_SOURCE_DIR}" --target="${ESMVALTOOL_DIR}" --no-deps
+rtw-env pip install "${ESMVALCORE_SOURCE_DIR}" --target="${ESMVALCORE_DIR}" --no-deps
diff --git a/esmvaltool/utils/recipe_test_workflow/app/get_esmval/opt/rose-app-metoffice.conf b/esmvaltool/utils/recipe_test_workflow/app/get_esmval/opt/rose-app-metoffice.conf
index 8911ca1cfd..1ed0bdc399 100644
--- a/esmvaltool/utils/recipe_test_workflow/app/get_esmval/opt/rose-app-metoffice.conf
+++ b/esmvaltool/utils/recipe_test_workflow/app/get_esmval/opt/rose-app-metoffice.conf
@@ -3,5 +3,7 @@ default=clone_latest_esmval.sh
 
 [env]
 BRANCH=main
+ESMVALCORE_SOURCE_DIR=${CYLC_WORKFLOW_SHARE_DIR}/src/ESMValCore
 ESMVALCORE_URL=git@github.com:ESMValGroup/ESMValCore.git
+ESMVALTOOL_SOURCE_DIR=${CYLC_WORKFLOW_SHARE_DIR}/src/ESMValTool
 ESMVALTOOL_URL=git@github.com:ESMValGroup/ESMValTool.git
diff --git a/esmvaltool/utils/recipe_test_workflow/opt/rose-suite-metoffice.conf b/esmvaltool/utils/recipe_test_workflow/opt/rose-suite-metoffice.conf
index 5a9287cb7a..6d089bf8ef 100644
--- a/esmvaltool/utils/recipe_test_workflow/opt/rose-suite-metoffice.conf
+++ b/esmvaltool/utils/recipe_test_workflow/opt/rose-suite-metoffice.conf
@@ -1,7 +1,7 @@
 [template variables]
 DRS_CMIP5="BADC"
 DRS_CMIP6="BADC"
-ENV_NAME="scitools/community/esmvaltool/2.11.0"
+ENV_NAME="/home/h02/cbillows/esmvt-rtw-tmp"
 KGO_ROOT_PATH="/data/users/esmval/KGO"
 ROOTPATH_CMIP5="/project/champ/data/cmip5/output1"
 ROOTPATH_CMIP6="/project/champ/data/CMIP6"