Build issue with specific commit hash

[ami-GS]

git checkout <specific hash>
.\tools\build.ps1

xdp-for-windows/tools/common.ps1

Lines 36 to 48 in 52c8ed2

	function Get-CurrentBranch {
	$env:GIT_REDIRECT_STDERR = '2>&1'
	$CurrentBranch = $null
	try {
	$CurrentBranch = git branch --show-current
	if ([string]::IsNullOrWhiteSpace($CurrentBranch)) {
	throw
	}
	} catch {
	Write-Error "Failed to get branch from git"
	}
	return $CurrentBranch
	}

git branch --show-current get error when currently point to specific commit hash.