[ci] Use GH CLI tool to determine changed files

Previous method was flawed and would produce a list of every file changed on master since the PR commit was branched off it. So in general the older the PR the more unconnected to the PR files would appear on the list. Signed-off-by: Greg Chadwick <[email protected]>
GregAC · May 18, 2023 · 242f5cb · 242f5cb
1 parent 4ae5192
commit 242f5cb
Showing 1 changed file with 5 additions and 6 deletions.
diff --git a/.github/workflows/pr_change_check.yml b/.github/workflows/pr_change_check.yml
@@ -22,12 +22,11 @@ jobs:
 
       - name: Determine changed files
         run: |
-          pr_ref="refs/pull/${{ github.event.number }}/merge"
-          echo $pr_ref
-          git fetch origin "$pr_ref"
-          git diff --name-only \
-            "origin/${{ github.base_ref }}" \
-            FETCH_HEAD > $HOME/changed_files
+          pr_url="https://github.com/${{ github.repository }}/pull/${{ github.event.number }}"
+          echo $pr_url
+          gh pr diff $pr_url --name-only > $HOME/changed_files
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Show files changed
         run: cat $HOME/changed_files