Host key verification failed. fatal: Could not read from remote repository

[tomnasweezy]

I Have been on this for to long I am not sure where the problem is and trying to write a Azure pipline to deploy to the Acquia cloud

i am following this https://github.com/mikemadison13/blt-azure-pipelines/blob/master/azure-pipelines.yml

MY SSH attached to Acquia portal is done correctly so i am not sure where the problem is .

Appreciate any suggestion or may commands to run for check

here is my yml file

trigger:
- initialPipeline

jobs:
- job: Prepare
  pool:
    vmImage: 'ubuntu-latest'
  steps:
  - task: InstallSSHKey@0
    inputs:
      knownHostsEntry: '$(Host)' // the host name
      sshPublicKey: '$(public)' // the raw public key goes here 
      sshKeySecureFile: 'id_rsa'
    displayName: 'Install the SSH key that we need for the external git repo'
  - script: |
      echo "Temporary job"
      php --version
      which php
      sudo apt-get -y install php
- job: Build
  pool:
    vmImage: 'ubuntu-latest'
  steps:
  - script: |
      composer validate --no-check-all --ansi
      composer update
      composer install --no-interaction
      mysql -u root -proot -e "CREATE DATABASE drupal"
      echo "Validate"
      ./vendor/bin/blt setup --no-interaction --ansi --verbose
      ./vendor/bin/blt validate --ansi --verbose
  - script: |
      echo "build"
      ./vendor/bin/blt source:build --no-interaction
  - script: |
      ./vendor/bin/blt artifact:deploy --commit-msg "BLT-000: Example deploy to branch" --branch "intialsync" -vvv --ignore-dirty --no-interaction --dry-run
    displayName: 'Deploying'

composer.json

 "require": {
        "php": ">=8.1",
        "acquia/acquia-cms-starterkit": "^1",
        "acquia/blt": "^13.7",
        "acquia/drupal-environment-detector": "^1",
        "acquia/memcache-settings": "^1",
        "composer/installers": "^2.1",
        "cweagans/composer-patches": "^1.6",
        "drupal/admin_toolbar": "^3.4",
        "drupal/config_pages": "^2.14",
        "drupal/config_split": "^1.9",
        "drupal/core-composer-scaffold": "^10",
        "drupal/core-recommended": "^10",
        "drupal/gin": "^3.0@RC",
        "drupal/gin_toolbar": "^1.0@rc",
        "drupal/twig_tweak": "^3.2",
        "drush/drush": "^12",
        "oomphinc/composer-installers-extender": "^2"
    },
    "require-dev": {
        "acquia/coding-standards": "^2.0.0",
        "mglaman/phpstan-drupal": "^1.1",
        "phpstan/extension-installer": "^1.1",
        "phpstan/phpstan": "^1.6",
        "phpstan/phpstan-deprecation-rules": "^1.0",
        "phpunit/phpunit": "^9.5",
        "squizlabs/php_codesniffer": "^3.6"
    },

` Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
 [ExecStack]  Exit code 128  Time 0.147s
 [error]  Unexpected error while searching for remote branch: `