fix: input ref for pr ci (#447)

Author: rebel-seinpark

.github/workflows/rbln_optimum_ci.yaml

@@ -81,7 +81,7 @@ jobs:
       - name: Checkout current repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref || github.sha }}
+          ref: ${{ inputs.ref != '' && inputs.ref || github.sha }}
           submodules: recursive
           fetch-depth: 0
 
@@ -163,7 +163,7 @@ jobs:
       - name: Checkout current repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref || github.sha }}
+          ref: ${{ inputs.ref != '' && inputs.ref || github.sha }}
           submodules: recursive
           fetch-depth: 0
 
@@ -283,7 +283,7 @@ jobs:
       - name: Checkout current repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref || github.sha }}
+          ref: ${{ inputs.ref != '' && inputs.ref || github.sha }}
           submodules: recursive
           fetch-depth: 0
 

.github/workflows/rbln_trigger_internal_test.yaml

@@ -35,7 +35,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref || github.sha }}
+          ref: ${{ inputs.ref != '' && inputs.ref || github.sha }}
           fetch-depth: 0
 
       - name: Set up Python 3.12

.github/workflows/rbln_trigger_on_pr.yaml

@@ -80,3 +80,5 @@ jobs:
     if: ${{ needs.check-skip-ci.outputs.should_skip != 'true' && (needs.check-team-member.outputs.is_team_member == 'true' || needs.check-team-member.outputs.is_collaborator == 'true') }}
     uses: ./.github/workflows/rbln_trigger_internal_test.yaml
     secrets: inherit
+    with:
+      ref: ${{ github.event.pull_request.head.sha }}

.github/workflows/rbln_vllm-rbln_pytest.yaml

@@ -77,7 +77,7 @@ jobs:
       - name: Checkout the vllm-rbln repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.pr_number && format('refs/pull/{0}/merge', inputs.pr_number) || inputs.ref || github.sha }}
+          ref: ${{ inputs.pr_number && format('refs/pull/{0}/merge', inputs.pr_number) || (inputs.ref != '' && inputs.ref) || github.sha }}
           submodules: recursive
           fetch-depth: 0
 
@@ -203,7 +203,7 @@ jobs:
       - name: Checkout the vllm-rbln repository
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.pr_number && format('refs/pull/{0}/merge', inputs.pr_number) || inputs.ref || github.sha }}
+          ref: ${{ inputs.pr_number && format('refs/pull/{0}/merge', inputs.pr_number) || (inputs.ref != '' && inputs.ref) || github.sha }}
           submodules: recursive
           fetch-depth: 0