Fix a bunch of test failures due to new git fetch code.

spec/capistrano_deploy_tags_spec.rb

@@ -24,19 +24,22 @@ describe Capistrano::DeployTags do
   end
 
   context "prepare_tree" do
-    before :each do
+    before do
       configuration.set(:branch, 'master')
       configuration.set(:stage, 'test')
     end
 
     it "raises an error when not in a git tree" do
       FileUtils.chdir '/tmp'
+      configuration.cdt.stub(exec_success?: true)
       expect { configuration.find_and_execute_task('git:prepare_tree') }.to raise_error('git checkout master failed!')
     end
 
     it "raises when unable to fetch" do
-      configuration.cdt.should_receive(:exec_success?).and_return(false)
-      expect { configuration.find_and_execute_task('git:prepare_tree') }.to raise_error(/'git fetch origin' failed/)
+      with_clean_repo do
+        configuration.cdt.should_receive(:exec_success?).and_return(false)
+        expect { configuration.find_and_execute_task('git:prepare_tree') }.to raise_error(/'git fetch ' failed/)
+      end
     end
 
     context "with a clean git tree" do
@@ -55,6 +58,7 @@ describe Capistrano::DeployTags do
 
       it "does not raise an error when run from a clean tree" do
         with_clean_repo do
+          configuration.cdt.stub(exec_success?: true)
           expect { configuration.find_and_execute_task('git:prepare_tree') }.to_not raise_error
         end
       end
@@ -71,6 +75,7 @@ describe Capistrano::DeployTags do
         with_clean_repo do
           system('git remote add nowhere git@example.com:nowhere')
           configuration.set(:git_remote, 'nowhere')
+          configuration.cdt.stub(pending_git_changes?: false)
           configuration.cdt.should_receive(:safe_run).with('git', 'checkout', 'master')
           configuration.cdt.should_receive(:safe_run).with('git', 'pull', 'nowhere', 'master')
           configuration.find_and_execute_task('git:prepare_tree')
@@ -79,6 +84,7 @@ describe Capistrano::DeployTags do
 
       it "uses the first remote when one is not specified" do
         with_clean_repo do
+          configuration.cdt.stub(pending_git_changes?: false)
           system('git remote add somewhere git@example.com:somewhere')
           configuration.cdt.should_receive(:safe_run).with('git', 'checkout', 'master')
           configuration.cdt.should_receive(:safe_run).with('git', 'pull', 'somewhere', 'master')