Git Source control section has been extended with a new configuration parameter cleanUntrackedFiles. The purpose of this parameter is to avoid invocation of the command "git clean -d -f -x" during continue integration builds. You may want to use this trick for incremental builds when you don't want to delete compiled files after each sequential project. Default value is true. It corresponds to default behavior

Author: askrinnik

project/core/sourcecontrol/Git.cs

@@ -138,6 +138,14 @@ public class Git : ProcessSourceControl
         [ReflectorProperty("autoGetSource", Required = false)]
         public bool AutoGetSource { get; set; }
 
+        /// <summary>
+        /// Remove untracked files from the working tree
+        /// </summary>
+        /// <version>1.5</version>
+        /// <default>true</default>
+        [ReflectorProperty("cleanUntrackedFiles", Required = false)]
+        public bool CleanUntrackedFiles { get; set; }
+
         /// <summary>
         /// The location of the Git executable. 
         /// </summary>
@@ -267,6 +275,7 @@ public Git(IHistoryParser historyParser, ProcessExecutor executor, IFileSystem f
             _fileSystem = fileSystem;
             _fileDirectoryDeleter = fileDirectoryDeleter;
             this.AutoGetSource = true;
+            this.CleanUntrackedFiles = true;
             this.Executable = "git";
             this.Branch = "master";
             this.TagCommitMessage = "CCNet Build {0}";
@@ -327,7 +336,8 @@ public override void GetSource(IIntegrationResult result)
                 GitUpdateSubmodules(result);
 
             // clean up the local working copy
-            GitClean(result);
+      if (CleanUntrackedFiles)
+			  GitClean(result);
         }
 
         /// <summary>