Cleanup deleted branches (PowerShell)

clean_deleted_git_branches.ps1

# Step 1: git fetch -p
git fetch -p

# Step 2: git for-each-ref --format '%(refname:short) %(upstream:track)' | awk '$2 == "[gone]" {print $1}' | xargs git branch -D
git for-each-ref --format '%(refname:short) %(upstream:track)' | Where-Object { $_.Split(' ')[1] -eq '[gone]' } | ForEach-Object { git branch -D $_.Split(' ')[0] }