diff --git a/Tests/CTestUpdateGIT.cmake.in b/Tests/CTestUpdateGIT.cmake.in
index 8b1060002..c721bb4e6 100644
--- a/Tests/CTestUpdateGIT.cmake.in
+++ b/Tests/CTestUpdateGIT.cmake.in
@@ -25,6 +25,12 @@ set(AUTHOR_CONFIG "[user]
 message("Creating test directory...")
 init_testing()
 
+if(UNIX)
+  set(src "@CMAKE_CURRENT_SOURCE_DIR@")
+  configure_file(${src}/CTestUpdateGIT.sh.in ${TOP}/git.sh @ONLY)
+  set(GIT ${TOP}/git.sh)
+endif()
+
 #-----------------------------------------------------------------------------
 # Create the repository.
 message("Creating repository...")
diff --git a/Tests/CTestUpdateGIT.sh.in b/Tests/CTestUpdateGIT.sh.in
new file mode 100755
index 000000000..4761d3293
--- /dev/null
+++ b/Tests/CTestUpdateGIT.sh.in
@@ -0,0 +1,6 @@
+#!/bin/sh
+if test "x$1" = "xpull"; then
+    "@GIT@" "$@" && sleep 1 && touch foo.txt
+else
+    exec "@GIT@" "$@"
+fi