fix git grep

.gitea/workflows/gentoo-utils.yml

@@ -4,7 +4,7 @@ on: [push]
 
 defaults:
   run:
-    shell: bash -le -o pipefail {0}
+    shell: bash -el {0}
 
 jobs:
   build-oci-image:
@@ -191,5 +191,6 @@ jobs:
         uses: actions/checkout@v5
 
       - name: grep for patterns
+        # negate git grep ret code because 1 means no findings
         run: |
-          git grep -E 'todo!|dbg!' -- '*.rs' && exit 1 || exit 0
+          git --no-pager grep -E 'todo!|dbg!' -- '*.rs' && return 1 || return 0