cifuzz: protect forks from CIFuzz

CIFuzz isn't compatible with forks: https://github.com/google/oss-fuzz/issues/3731

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ee5dd098e9b89ae58df688444bd44d84d1dda9a5..b46b1d619e27fa0a3091efb90d892683a38917fb 100644 (file)
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,6 +18,7 @@ on:
 jobs:
  Fuzzing:
    runs-on: ubuntu-latest
+   if: github.repository == 'systemd/systemd'
    steps:
    - name: Build Fuzzers
      id: build