Git checkout fails when used multiple repositories in Azure pipelines yaml

Question

There is a build pipeline which has the below code.

    resources:
      repositories:
      - repository: repName
        type: git
        ref: branchname
        name: project/repo

    jobs:
    - job: prerequisite
      timeoutInMinutes: 120
      displayName: Setup variables
      steps:
      - checkout: self
      - checkout: repName

When pipeline is run, we get the below error.

HEAD is now at 72bc708d Update azure-pipelines.yml for Azure Pipelines
##[warning]Git checkout failed on shallow repository, this might because of git fetch with depth '1' doesn't include the checkout commit 'refs/remotes/origin/85hgf1234754b65aaadc947c195313b626a4bb72'. Please reference documentation (http://go.microsoft.com/fwlink/?LinkId=829603)
##[error]Git checkout failed with exit code: 1

If repositories section is not present and checkout is not specified, which means multiple repositories not involved - check out will be successful without any error.

Any idea on this? Why does checkout fail when multiple repositories involved?

Have tested without repository section and it succeeds everytime.

Answer 1

Make sure that the shallow fetch option of your build is not enabled. It is unfortunately enabled by default when a new pipeline is created. To change that: Go to your pipeline -> Edit -> The 3 dots menu top right -> Triggers -> YAML tab -> Get Sources section -> Uncheck the Shallow Fetch option at the bottom of the page -> Save