DownloadAllGitReposInVSTS

# Downloads all the git projects from a Microsoft Visual Studio Team Services (VSTS) account. 
# Helpful if a team has many git repositories.

# change these
$project = "myProject"
$whereToSaveRoot = "d:\myProject\"

# application start
$username = Read-Host -Prompt 'UserName from VSTS Alt Credentials'

# tried as secure string, it did not work consistently 
$password = Read-Host -Prompt 'Password from VSTS Alt Credentials'

$basicAuth = ("{0}:{1}" -f $username,$password)
$basicAuth = [System.Text.Encoding]::UTF8.GetBytes($basicAuth)
$basicAuth = [System.Convert]::ToBase64String($basicAuth)
$headers = @{Authorization=("Basic {0}" -f $basicAuth)}

# change mycompany to yourcompany
$listOfProjectRepos = Invoke-RestMethod -Uri https://mycompany.visualstudio.com/defaultcollection/$project/_apis/git/repositories?api-version=1.0 -headers $headers -Method Get

foreach($item in $listOfProjectRepos.value){
   $saveTo = -join($whereToSaveRoot, $item.name)
   $exists = Test-Path $saveTo
   if(-Not $exists){
       #change myProjectTeamName and myCompany
       $repoUrl = -join("https://myCompany.visualstudio.com/DefaultCollection/myProjectTeamName/_git/",$item.name)
       $cloneCmd = "git clone $repoUrl $saveTo"
       Write-Host $cloneCmd;
       Invoke-Expression $cloneCmd;
   } 
}