Test-PSVersionGitHub.ps1

# check if a new release of PowerShell Core is available on GitHub
function Test-PSVersionGitHub {
    try {
        # get latest release from github atom feed
        $Release = Invoke-RestMethod https://github.com/PowerShell/PowerShell/releases.atom -ErrorAction Stop | Select-Object -First 1
    } catch {
        Write-Warning "Could not check for new version. $_ `n"
        break
    }
    # extract information from atom response
    $GitId = $Release.id -split "/" | Select-Object -Last 1
    $Download = -join("https://github.com",$Release.link.href)
    # Add information to dictionary for output
    $output = [ordered]@{
        "PSVersion" = $PSVersionTable.PSVersion;
        "GitCommitId" = $PSVersionTable.GitCommitId;
        "GitHubReleaseVersion" = $GitId;
        "GitHubReleaseLink" = $Download;
    }
    Write-Output (New-Object -TypeName psobject -Property $output)
}