CI: improve more ci worflow

.github/workflows/nightly.yml

@@ -14,6 +14,8 @@ concurrency:
 jobs:
   build:
     runs-on: macos-26
+    env:
+      REF_NAME: nightly
 
     steps:
       - uses: actions/checkout@v4
@@ -29,7 +31,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           repository: 'SideStore/beta-build-num'
-          ref: ${{ github.ref_name }}
+          ref: ${{ env.REF_NAME }}
           token: ${{ secrets.CROSS_REPO_PUSH_KEY }}
           path: 'Dependencies/beta-build-num'
           fetch-depth: 1
@@ -43,7 +45,7 @@ jobs:
           QUALIFIED_VERSION=$(python3 scripts/ci/workflow.py compute-qualified \
               "$MARKETING_VERSION" \
               "$BUILD_NUM" \
-              "${{ github.ref_name }}" \
+              "${{ env.REF_NAME }}" \
               "$SHORT_COMMIT")
 
           echo "BUILD_NUM=$BUILD_NUM" | tee -a $GITHUB_ENV
@@ -167,10 +169,10 @@ jobs:
           python3 scripts/ci/workflow.py deploy \
             Dependencies/apps-v2.json \
             "_includes/source.json" \
-            "${{ github.ref_name }}" \
+            "${{ env.REF_NAME }}" \
             "$SHORT_COMMIT" \
             "$MARKETING_VERSION" \
             "$VERSION" \
-            "${{ github.ref_name }}" \
+            "${{ env.REF_NAME }}" \
             "com.SideStore.SideStore" \
             "SideStore.ipa"