您可以使用 repositories 类型的 resources 来实现：

resources:
  repositories:
  - repository: string  # identifier (A-Z,a-z,0-9,and underscore)
    type: enum  # see the following "Type" topic
    name: string  # repository name (format depends on `type`)
    ref: string  # ref name to use; defaults to ''refs/heads/master''
    endpoint: string  # name of the service connection to use (for types that aren''t Azure Repos)
    trigger:  # CI trigger for this repository,no CI trigger if skipped (only works for Azure Repos)
      branches:
        include: [ string ] # branch names which will trigger a build
        exclude: [ string ] # branch names which will not
      tags:
        include: [ string ] # tag names which will trigger a build
        exclude: [ string ] # tag names which will not
      paths:
        include: [ string ] # file paths which must match to trigger a build
        exclude: [ string ] # file paths which will not trigger a build

并使用 checkout 步，例如：

resources:
  repositories:
  - repository: MyAzureReposGitRepository # In a different organization
    endpoint: MyAzureReposGitServiceConnection
    type: git
    name: OtherProject/MyAzureReposGitRepo

trigger:
- main

pool:
  vmImage: ''ubuntu-latest''

steps:
- checkout: self
- checkout: MyAzureReposGitRepository