diff --git a/parts/packages.nix b/parts/packages.nix
index 61776ff..7608829 100644
--- a/parts/packages.nix
+++ b/parts/packages.nix
@@ -37,6 +37,11 @@
         ];
         text = ''
           start_dir="$PWD"
+          if [ -n "${GITEA_WORKSPACE:-}" ]; then
+            cd "$GITEA_WORKSPACE"
+          elif [ -n "${GITHUB_WORKSPACE:-}" ]; then
+            cd "$GITHUB_WORKSPACE"
+          fi
           while [ ! -x ./scripts/mcp-server/run-tests.sh ]; do
             if [ "$PWD" = "/" ]; then
               echo "Could not find executable scripts/mcp-server/run-tests.sh starting from $start_dir" >&2