fix checkout, rm refs

.gitea/workflows/test.yml

@@ -10,8 +10,6 @@ on:
 
 env:
   SO_VERSION: v1.1.0-36d4969-202407091537
-  FIXTURENET_ETH_STACKS_VERSION: 0d63b95
-  SYSTEM_TESTS_VERSION: b4ca942
 
 jobs:
   unit-tests:
@@ -62,7 +60,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: cerc-io/system-tests
-          ref: ${{ env.SYSTEM_TESTS_VERSION }}
           path: ./system-tests
           token: ${{ secrets.CICD_REPO_TOKEN }}
           progress: false
@@ -70,7 +67,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: cerc-io/fixturenet-eth-stacks
-          ref: ${{ env.FIXTURENET_ETH_STACKS_VERSION }}
           path: ./fixturenet-eth-stacks
           progress: false
       - name: Run testnet stack