How does that do?

.gitea/workflows/generate.yaml

@@ -16,6 +16,13 @@ jobs:
             - name: Validate YAML
               uses: https://github.com/GrantBirki/json-yaml-validate@v2.6.1
 
+            - name: Get current timestamp
+              id: timestamp
+              run: echo "::set-output name=date::$(date +'%Y%m%d_%H%M%S')"
+
             - name: Create Release
               if: success()
-              uses: https://github.com/ncipollo/release-action@v1
+              uses: ncipollo/release-action@v1
+              with:
+                tag: ${{ steps.timestamp.outputs.date }}
+                commit: ${{ steps.timestamp.outputs.date }}