Here is a sample in powershell and Azure which checks if it is already configured - if not then it sets the git config for the user - you would just want to tweak it to change the pat if needed:

"Getting current git-credentials..."

$uri = $databricksUrl + "/api/2.0/git-credentials"

$headers = @{

  "Authorization" = "Bearer $databricksToken"

  "X-Databricks-Azure-SP-Management-Token" = $azToken

  "X-Databricks-Azure-Workspace-Resource-Id" = $wsId

}

"Headers: " +$headers

"Checking if git-config already exists."

$gitconfig = Invoke-RestMethod -Uri $uri -Headers $headers

if (![String]::IsNullOrWhitespace($gitconfig)) {

   "Git config already exists"

 } else {

   $body = '{

    "personal_access_token": $gitPat,

    "git_username": $gitUsername,

    "git_provider": "gitHub"

   }'

   $gitconfig = Invoke-RestMethod -Method 'Post' -Uri $uri -Headers $headers -Body $body -ContentType "application/json"

   $gitconfig

 }