Azure DevOps - Create A New Branch In Git Repository

azure-devops-create-branch.ps1

$devopsApiVersion = "7.0"
$newBranch = "sprint/userStoryNumber";
$baseBranch = "master";
$organization = "contoso";
$project = "contoso";
$repository = "contosowebapp";

## -----------------------------------------------------------------
## Create Branch
## -----------------------------------------------------------------
createNewBranch($organization, $project, $repository, $baseBranch, $newBranch, $headers, $devopsApiVersion);

## -----------------------------------------------------------------
## Generate Auth Header
## -----------------------------------------------------------------
$pat = "<<your-personal-access-token>>"
$base64AuthInfo = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$pat"))
$headers = @{ Authorization = "Basic $base64AuthInfo" }

## -----------------------------------------------------------------
## Function - To Generate New Branch From Given Base Branch
## -----------------------------------------------------------------
function createNewBranch($organization, $project, $repository, $baseBranch, $newBranch, $headers, $version) 
{

    ## -----------------------------------------------------------------
    ## Get ID of the base branch
    ## -----------------------------------------------------------------
    $getBaseBranchUrl = "https://dev.azure.com/$organization/$project/_apis/git/repositories/$repository/refs?filter=heads/$baseBranch&api-version=$version"
    $baseBranchResponse = Invoke-RestMethod -Uri $getBaseBranchUrl -ContentType "application/json" -headers $headers -Method GET

    ## -----------------------------------------------------------------
    ## Create a new branch
    ## -----------------------------------------------------------------
    $createNewBranchUrl = "https://dev.azure.com/$organization/$project/_apis/git/repositories/$repository/refs?api-version=$version"
    $body = ConvertTo-Json @(
    @{
        name = "refs/heads/$newBranch"
        newObjectId = $baseBranchResponse.value.objectId
        oldObjectId = "0000000000000000000000000000000000000000"
    })

    $response = Invoke-RestMethod -Uri $createNewBranchUrl -ContentType "application/json" -Body $body -headers $headers -Method POST

    Write-Host $response.value
}