diff --git a/_service b/_service
index 4acadbe..309a360 100644
--- a/_service
+++ b/_service
@@ -1,13 +1,12 @@
 <services>
-  <service name="obs_scm" mode="disabled">
+  <service name="tar_scm" mode="disabled">
     <param name="url">https://gitlab.com/redhat-crypto/fedora-crypto-policies.git</param>
     <param name="scm">git</param>
     <param name="versionformat">%cd.%h</param>
     <param name="changesgenerate">enable</param>
     <param name="revision">b21c8114995e07965c2ccde5f5767d0618d854bf</param>
   </service>
-  <service name="tar" mode="buildtime"/>
-  <service name="recompress" mode="buildtime">
+  <service name="recompress" mode="disabled">
     <param name="file">*.tar</param>
     <param name="compression">gz</param>
   </service>
diff --git a/crypto-policies.changes b/crypto-policies.changes
index 394a370..08536e8 100644
--- a/crypto-policies.changes
+++ b/crypto-policies.changes
@@ -1,7 +1,16 @@
+-------------------------------------------------------------------
+Tue Feb  9 10:50:47 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Use tar_scm service, not obs_scm: With crypto-policies entering
+  Ring0 (distro bootstrap) we want to be sure to keep the buildtime
+  deps as low as possible.
+- Add python3-base BuildRequires: previously, OBS' tar service
+  pulled this in for us.
+
 -------------------------------------------------------------------
 Mon Feb  8 11:45:38 UTC 2021 - Pedro Monreal <pmonreal@suse.com>
 
-- Add a BuildIgnore for crypto-policies 
+- Add a BuildIgnore for crypto-policies
 
 -------------------------------------------------------------------
 Mon Feb  8 11:22:31 UTC 2021 - Pedro Monreal <pmonreal@suse.com>
diff --git a/crypto-policies.spec b/crypto-policies.spec
index 35cf766..3dd9b5f 100644
--- a/crypto-policies.spec
+++ b/crypto-policies.spec
@@ -34,6 +34,7 @@ Patch0:         crypto-policies-asciidoc.patch
 Patch1:         crypto-policies-typos.patch
 Patch2:         crypto-policies-test_supported_modules_only.patch
 Patch3:         crypto-policies-no-build-manpages.patch
+BuildRequires:  python3-base
 # BuildRequires:  asciidoc
 # BuildRequires:  gnutls >= 3.6.0
 # BuildRequires:  java-devel
diff --git a/fedora-crypto-policies-20210118.b21c811.obscpio b/fedora-crypto-policies-20210118.b21c811.obscpio
deleted file mode 100644
index 2b403a3..0000000
--- a/fedora-crypto-policies-20210118.b21c811.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4427a57c1c7e2d54c159085fc93cf135b4c45c05097628bfdb1cd74532934416
-size 259083
diff --git a/fedora-crypto-policies-20210118.b21c811.tar.gz b/fedora-crypto-policies-20210118.b21c811.tar.gz
new file mode 100644
index 0000000..30cdc3d
--- /dev/null
+++ b/fedora-crypto-policies-20210118.b21c811.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1481d4036112e78e4df5f92c3f39f8f9fa1f43b950729759f1e7fb28e4f5257a
+size 56519
diff --git a/fedora-crypto-policies.obsinfo b/fedora-crypto-policies.obsinfo
deleted file mode 100644
index dcc82b5..0000000
--- a/fedora-crypto-policies.obsinfo
+++ /dev/null
@@ -1,5 +0,0 @@
-name: fedora-crypto-policies
-version: 20210118.b21c811
-mtime: 1610992246
-commit: b21c8114995e07965c2ccde5f5767d0618d854bf
-