diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index e02afd0f60..7a0e69df7f 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -47,8 +47,9 @@ jobs:
       - name: changed files
         id: files_after
         run: |
+          git fetch origin master:master
           ANY_CHANGED=false
-          ALL_CHANGED_FILES=$(git diff --name-only origin/master HEAD streams/ | tr '\n' ' ')
+          ALL_CHANGED_FILES=$(git diff --name-only master -- streams/ | tr '\n' ' ')
           if [ -n "${ALL_CHANGED_FILES}" ]; then
             ANY_CHANGED=true
           fi
@@ -86,9 +87,9 @@ jobs:
       - name: changed files
         id: files
         run: |
-          FILES=streams/*.m3u
+          git fetch origin master:master
           ANY_CHANGED=false
-          ALL_CHANGED_FILES=$(git diff --name-only "${FILES}" | tr '\n' ' ')
+          ALL_CHANGED_FILES=$(git diff --name-only master -- streams/ | tr '\n' ' ')
           if [ -n "${ALL_CHANGED_FILES}" ]; then
             ANY_CHANGED=true
           fi