move CI fix to appveyor clone_script

Author: maurei

Build.ps1

@@ -93,14 +93,6 @@ function CreateNuGetPackage {
     CheckLastExitCode
 }
 
-function LoadOpenApiBranchIfRequired {
-    if ($env:APPVEYOR_REPO_BRANCH -eq "openapi") {
-        git fetch origin openapi:openapi
-    }
-}
-
-LoadOpenApiBranchIfRequired
-
 dotnet tool restore
 CheckLastExitCode
 

appveyor.yml

@@ -37,9 +37,14 @@ for:
   services:
   - postgresql101
   # REF: https://github.com/docascode/docfx-seed/blob/master/appveyor.yml
+  clone_script:
+    - ps: |
+        git clone --branch=$env:APPEVEYOR_REPO_BRANCH git@github.com:$env:APPEVEYOR_REPO_NAME.git $env:APPEVEYOR_BUILD_FOLDER
+        git fetch -q origin +refs/pull/$env:APPEVEYOR_PULL_REQUEST_NUMBER/merge:
+        git checkout -qf FETCH_HEAD
   before_build:
     - pwsh: |
-        if (-Not $env:APPVEYOR_PULL_REQUEST_TITLE) {
+        if (-Not $env:APPEVEYOR_PULL_REQUEST_TITLE) {
             # https://dotnet.github.io/docfx/tutorial/docfx_getting_started.html
             git checkout $env:APPVEYOR_REPO_BRANCH -q
         }