update workflow

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.gitea/workflows/autoupdate.yml

@@ -17,6 +17,9 @@ jobs:
         go-version: 1.21
     - name: checkout
       uses: https://gitea.com/actions/checkout@v3
+      with:
+        fetch-depth: 2
+    - run: git checkout HEAD^
     - name: get pkgdashcli
       run: GOPROXY=direct GONOSUMDB="git.unistack.org/*" GONOPROXY="git.unistack.org/*" GOBIN=/bin go install git.unistack.org/unistack-org/pkgdash/cmd/pkgdashcli@latest
     - name: pkgdashcli check