[CmdletBinding()]param(
    [Parameter(Mandatory)]
    [string]$GitHubProject,
    [string]$tag='latest',
    [Alias("Match")]
    [string]$MatchPattern
)

filter Out-Matched { $_ | Where-Object { $_ -match $MatchPattern } }
Set-Alias FinalOutput Out-Default
if( $MatchPattern ) { Set-Alias FinalOutput Out-Matched }

Invoke-WebRequest https://github.com/$GitHubProject/releases/$tag -ErrorAction Stop |
    Select-Object -ExpandProperty Links |
    Where-Object href -match 'download/.*' |
    Select-Object -ExpandProperty href |
    ForEach-Object { "https://github.com$_" } |
    FinalOutput