diff --git a/src/SourceBuild/tarball/content/.gitignore b/src/SourceBuild/tarball/content/.gitignore
new file mode 100644
index 000000000..3d0d3589c
--- /dev/null
+++ b/src/SourceBuild/tarball/content/.gitignore
@@ -0,0 +1,8 @@
+/.dotnet
+/Tools
+/artifacts
+/packages
+/tools-local/**/bin
+/tools-local/**/obj
+/src/linker/src/ILLink.Tasks/ILLink.Tasks.nuspec
+/src/nuget-client/NuGet.config