diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0cdbe5d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "app"]
+	path = app
+	url = http://t:f6ad1fe79d0b929d8def3339dafcbf919f311acf@qstack.pl:3000/c2023/p22.10
+	branch = z1
diff --git a/app b/app
new file mode 160000
index 0000000..db0752d
--- /dev/null
+++ b/app
@@ -0,0 +1 @@
+Subproject commit db0752d3e05f90f7fd8dda802b2366f3c6942b87
diff --git a/git-log.txt b/git-log.txt
new file mode 100644
index 0000000..efcc525
--- /dev/null
+++ b/git-log.txt
@@ -0,0 +1 @@
+git submodule add -b z1 http://t:f6ad1fe79d0b929d8def3339dafcbf919f311acf@qstack.pl:3000/c2023/p22.10 app