checkout git branch from input vars

Signed-off-by: Jakub Jarosz <[email protected]>

Author: jjngx

.github/workflows/mend.yml

@@ -74,8 +74,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-        # with:
-        #   ref: ${{ inputs.branch && inputs.branch || github.ref }}
+        with:
+          ref: ${{ inputs.branch && inputs.branch || github.ref }}
 
       - name: Download agent
         run: curl -fsSLJO https://github.com/whitesource/unified-agent-distribution/releases/latest/download/wss-unified-agent.jar