Fix Gitea checkout for package publishing

.gitea/workflows/publish.yml

@@ -3,7 +3,7 @@ name: Publish Package
 on:
   push:
     branches:
-      - "**"
+      - "8.0"
   workflow_dispatch:
 
 jobs:
@@ -13,6 +13,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          ref: "8.0"
+          fetch-depth: 0
 
       - name: Detect package branch
         run: |
@@ -21,7 +24,9 @@ jobs:
           import re
 
           branch = (
-              os.environ.get('GITHUB_REF_NAME')
+              os.environ.get('GITEA_REF_NAME')
+              or os.environ.get('GITEA_HEAD_REF')
+              or os.environ.get('GITHUB_REF_NAME')
               or os.environ.get('GITHUB_HEAD_REF')
               or '')
           publish = bool(re.fullmatch(r'\d+\.\d+', branch))