pull.ps1

param(
    [string]$server = "origin",
    [string]$branch = "master"
)

$gitStatus = (Get-GitStatus)

if ($gitStatus -eq $null) {
    write-error "Not in a Git repository."
} elseif ($gitStatus.HasUntracked -or $gitStatus.HasWorking -or $gitStatus.HasIndex) {
    write-error "Can't switch to $branch when you have uncommited changes."
} else {
    $oldBranch = $gitStatus.Branch

    if ($branch -ne $oldBranch) { git checkout $branch }
    git pull --rebase $server
    git remote prune $server
    if ($branch -ne $oldBranch) { git checkout $oldBranch }
}