fixup! fixup! release: create initial Windows installer build workflow

We need to log into Azure, and check out the custom Action, before we
can download secrets from the KeyVault via `akv-secret`.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/build-git-installers.yml

@@ -218,6 +218,16 @@ jobs:
         shell: bash
         run: |
           git clone --filter=blob:none --single-branch -b main https://github.com/git-for-windows/build-extra /usr/src/build-extra
+      - name: Log in to Azure
+        uses: azure/login@v2
+        if: env.DO_WIN_CODESIGN == 'true'
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+      - name: Check out repository (for akv-secret Action)
+        if: env.DO_WIN_CODESIGN == 'true'
+        uses: actions/checkout@v4
       - name: Download code signing secrets
         id: codesign-secrets
         if: env.DO_WIN_CODESIGN == 'true'