diff --git a/.gitmodules b/.gitmodules
index 550d0d4a9accc206fc9214d7b3baaa9101024ab9..117189a66168e5062b04c602bff855f1574c44cd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,6 @@
+[submodule "workflow/external_repo"]
+	path = workflow/external_repo
+	url = https://git.biohpc.swmed.edu/s219741/astrocyte-atac-runner.git
 [submodule "workflow/external_repo/astrocyte-atac-runner"]
 	path = workflow/external_repo/astrocyte-atac-runner
 	url = https://git.biohpc.swmed.edu/s219741/astrocyte-atac-runner.git
-	branch = master
diff --git a/workflow/.gitkeep b/workflow/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/workflow/external_repo/.gitkeep b/workflow/external_repo/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/workflow/external_repo/astrocyte-atac-runner b/workflow/external_repo/astrocyte-atac-runner
new file mode 160000
index 0000000000000000000000000000000000000000..a00c9cffd4efd5c61a1c637afc7ee97231f5c636
--- /dev/null
+++ b/workflow/external_repo/astrocyte-atac-runner
@@ -0,0 +1 @@
+Subproject commit a00c9cffd4efd5c61a1c637afc7ee97231f5c636
diff --git a/workflow/external_repo/astrocyte-atac-runner/.gitkeep b/workflow/external_repo/astrocyte-atac-runner/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/workflow/file.txt b/workflow/file.txt
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/workflow/main.nf b/workflow/main.nf
new file mode 100644
index 0000000000000000000000000000000000000000..0d9d64f27142ab78ce528d4dab31bf550ca2e81e
--- /dev/null
+++ b/workflow/main.nf
@@ -0,0 +1 @@
+# Hi!