Checkout Azure devops repos dynamically

pipeline.yaml

pool:
  vmImage: ubuntu-latest
steps:
# Checkout on a  branch
- template: step-checkout.yaml
  parameters:
    repoName: test_repo
    repoRef: test-branch
# Checkout on a tag
- template: step-checkout.yaml
  parameters:
    repoName: test_repo
    repoRef: test-tag
# Checkout on a commit
- template: step-checkout.yaml
  parameters:
    repoName: test_repo
    repoRef: 4647296b81b53c5c2430d76325d1586752ffb007  

step-checkout.yaml

parameters:
- name: collectionURL
  displayName: (optional) Project collection url, default is current collection/organisation
  default: $(System.CollectionUri)
- name: projectName
  displayName: (optional) Project name containing repository, default is cuurent project
  default: $(System.TeamProject)
- name: repoName
  displayName: (required) Name of Repository to be checked out
- name: repoRef
  displayName: (required) Reference of the repo to be checked out - can be a tag or branch or commit id and dynamically calculated e.g. $(branchRef)
steps:
  - script: |
        repoDir=$(Agent.BuildDirectory)/${{ parameters.repoName }}/${{parameters.repoRef}}
        echo "##[info] checking out in directory: $repoDir"
        /bin/rm -rf $repoDir
        url_with_token=$(echo ${{ parameters.collectionURL }} | sed -e "s/https\:\/\//https\:\/\/$(System.AccessToken)\@/g")
        git clone $url_with_token/${{ parameters.projectName}}/_git/${{ parameters.repoName }} $repoDir
        cd $repoDir
        git checkout ${{ parameters.repoRef }}
    displayName: Checkout - ${{ parameters.repoName }}@${{ parameters.repoRef }}

This looks really nice, but when using it without any edits I get this error in the output

`Starting: Checkout - MyRepo@refs/heads/main

Task : Command line
Description : Run a command line script using Bash on Linux and macOS and cmd.exe on Windows
Version : 2.178.0
Author : Microsoft Corporation
Help : https://docs.microsoft.com/azure/devops/pipelines/tasks/utility/command-line

'repoDir' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the path specified.
'url_with_token' is not recognized as an internal or external command,
operable program or batch file.
Generating script.
========================== Starting Command Output ===========================
"C:\Windows\system32\cmd.exe" /D /E:ON /V:OFF /S /C "CALL "D:....cmd""
"##[info] checking out in directory: $repoDir"
##[error]Cmd.exe exited with code '255'.
Finishing: Checkout - MyRepo@refs/heads/main
`
Any idea why this happens?

Ah..this gist uses bash for checking out...so please run it on Ubuntu/Linux agent. I will modify it to use poweshell core later so that it can be executed on both windows and Linux

I followed the steps you mentioned , But it is failing with authorization . I can see the bearer token is getting appended and the git clone URL is also getting changed , but still it fails . DO you have any idea how I can solve this .