diff --git a/.github/workflows/build_recipes.yaml b/.github/workflows/build_recipes.yaml
index 0602cca88..f2ef3fc11 100644
--- a/.github/workflows/build_recipes.yaml
+++ b/.github/workflows/build_recipes.yaml
@@ -83,7 +83,7 @@ jobs:
         shell: bash -el {0}
         if: github.event_name == 'pull_request'
         run: |
-          python -m emci build changed $GITHUB_WORKSPACE/ origin/main HEAD
+          python -m emci build changed $GITHUB_WORKSPACE/ origin/emscripten-3.1.58 HEAD
 
       ################################################################
       # UPLOAD
diff --git a/recipes/recipes_emscripten/python/recipe.yaml b/recipes/recipes_emscripten/python/recipe.yaml
index 3d5734b42..8a4e7c36b 100644
--- a/recipes/recipes_emscripten/python/recipe.yaml
+++ b/recipes/recipes_emscripten/python/recipe.yaml
@@ -11,7 +11,7 @@ source:
 
 build:
   number: 25
-  string: h_hash_25_cpython
+  string: h_${{ hash }}_25_cpython
 
 requirements:
   build: