fix remote repo action firing

Author: gilesknap

.github/workflows/code.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   lint:
     # pull requests are a duplicate of a branch push if within the same repo.
-    if: github.event_name != 'pull_request' || github.event.repository.full_name != github.repository
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
     runs-on: ubuntu-latest
 
     steps:
@@ -29,7 +29,7 @@ jobs:
           tox -e pre-commit,mypy
 
   test:
-    if: github.event_name != 'pull_request' || github.event.repository.full_name != github.repository
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
     strategy:
       fail-fast: false
       matrix:
@@ -65,7 +65,7 @@ jobs:
           files: cov.xml
 
   container:
-    if: github.event_name != 'pull_request' || github.event.repository.full_name != github.repository
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
     runs-on: ubuntu-latest
     permissions:
       contents: read

.github/workflows/docs.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   docs:
-    if: github.event_name != 'pull_request' || github.event.repository.full_name != github.repository
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
     strategy:
       fail-fast: false
       matrix: