Issue running Powershell script to clone GitHub repositories

I'm running into a problem where my script is unable to clone private GitHub repositories into a destination folder using a GitHub API key. When I run the script, I receive the following error:

Invoke-RestMethod : {"message":"Not Found","documentation_url":"https://docs.github.com/rest"}
At C:\Users\florekd\Desktop\script.ps1:5 char:17
+     $repoInfo = Invoke-RestMethod -Uri $url -Headers $headers
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

Original script:

# Function to clone a repository using GitHub API 
function CloneGitHubRepo($repoName, $accessToken, $repoBranch, $cloneDirectory) { 
    $headers = @{ "Authorization" = "Bearer $accessToken" } 
    $url = "https://api.github.com/<org_name>/$repoName" 
    $repoInfo = Invoke-RestMethod -Uri $url -Headers $headers 
    
    if ($repoInfo) { 
        $cloneUrl = $repoInfo.clone_url 
        git clone $cloneUrl -b $repoBranch $cloneDirectory --progress -v
    } 
    else { 
        Write-Host "Failed to retrieve repository information for $url" 
    } 
} 

Function Get-Filename($initialDirectory){
    [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null
    $OpenFileDialog=New-Object System.Windows.Forms.OpenFileDialog
    $OpenFileDialog.InitialDirectory=$initialDirectory
    $OpenFileDialog.ShowDialog() | Out-Null
    $OpenFileDialog.FileName
}

#Prompt user for a home directory to make
$save_directory = Read-Host -Prompt "Enter the root directory name to save all project files: "

#Prompt user for file containing list of GitHub repository URLs
#$git_list = Read-Host -Prompt "Provide the list of GitHub URLs to pull: "
$git_list = Get-Filename "$env:USERPROFILE\Desktop\"

#Prompt user for GitHub Release Branch to target
$git_branch = Read-Host -Prompt "Provide Git release branch to target: "

#Prompt user for GitHub API Token
$git_token = Read-Host -Prompt "Provide the GitHub token to use: "

#Create Save Directory
If(!(test-path -PathType container $save_directory))
{
      New-Item -Path $save_directory -ItemType Directory
}

# Loop through each repository and clone it 
foreach ($git_uri in Get-Content -Path $git_list) {
    CloneGitHubRepo $git_uri $git_token $git_branch "$save_directory\$git_uri"
}

Would it be easier to just use curl to pull the repos?