Clean up after downloading. In the case of git that means removing the .git dir from the clone.

lib/cocoa_pods/command/install.rb

@@ -3,7 +3,7 @@ module Pod
     class Install < Command
       def run
         if spec = Specification.from_podfile(podfile)
-          spec.install_dependent_specifications!(pods_root)
+          spec.install_dependent_specifications!(pods_root, true)
         else
           $stderr.puts "No Podfile found in current working directory."
         end

lib/cocoa_pods/downloader.rb

 module Pod
   class Downloader
-    def self.for_source(source)
+    def self.for_source(source, pod_root)
       options = source.dup
       if url = options.delete(:git)
-        Git.new(url, options)
+        Git.new(pod_root, url, options)
       else
         raise "Unsupported download strategy `#{source.inspect}'."
       end
     end
 
-    def initialize(url, options)
-      @url, @options = url, options
+    def initialize(pod_root, url, options)
+      @pod_root, @url, @options = pod_root, url, options
     end
 
     class Git < Downloader
@@ -22,11 +22,14 @@ module Pod
       # * sync output
       executable :git
 
-      def download_to(pod_root)
-        checkout = pod_root + 'source'
+      def source_dir
+        @pod_root + 'source'
+      end
+
+      def download
         if tag = @options[:tag]
-          checkout.mkdir
-          Dir.chdir(checkout) do
+          source_dir.mkdir
+          Dir.chdir(source_dir) do
             git "init"
             git "remote add origin '#{@url}'"
             git "fetch origin tags/#{tag} 2>&1"
@@ -34,14 +37,18 @@ module Pod
             git "checkout -b activated-pod-commit 2>&1"
           end
         elsif commit = @options[:commit]
-          git "clone '#{@url}' '#{checkout}'"
-          Dir.chdir(checkout) do
+          git "clone '#{@url}' '#{source_dir}'"
+          Dir.chdir(source_dir) do
             git "checkout -b activated-pod-commit #{commit} 2>&1"
           end
         else
           raise "Either a tag or a commit has to be specified."
         end
       end
+
+      def clean
+        (source_dir + '.git').rmtree
+      end
     end
   end
 end

lib/cocoa_pods/specification.rb

@@ -87,7 +87,7 @@ module Pod
       @resolved_dependent_specifications ||= Resolver.new(self).resolve
     end
 
-    def install_dependent_specifications!(root)
+    def install_dependent_specifications!(root, clean)
       resolved_dependent_specifications.each do |spec|
         install_spec = spec
         if part_of_spec_dep = spec.read(:part_of)
@@ -96,12 +96,12 @@ module Pod
         else
           puts "-- Installing: #{install_spec}"
         end
-        install_spec.install!(root)
+        install_spec.install!(root, clean)
       end
     end
 
     # User can override this for custom installation
-    def install!(pods_root)
+    def install!(pods_root, clean)
       require 'fileutils'
       pods_root.mkpath
       pod_root = pods_root + "#{@name}-#{@version}"
@@ -110,13 +110,15 @@ module Pod
       else
         pod_root.mkdir
         FileUtils.cp(@defined_in_file, pod_root)
-        download_to(pod_root)
+        download_to(pod_root, clean)
       end
     end
 
     # User can override this for custom downloading
-    def download_to(pod_root)
-      Downloader.for_source(@source).download_to(pod_root)
+    def download_to(pod_root, clean)
+      downloader = Downloader.for_source(@source, pod_root)
+      downloader.download
+      downloader.clean if clean
     end
 
     def from_podfile?