diff --git a/lib/syskit/log/datastore/dataset.rb b/lib/syskit/log/datastore/dataset.rb
index 62416a6..d87abc1 100644
--- a/lib/syskit/log/datastore/dataset.rb
+++ b/lib/syskit/log/datastore/dataset.rb
@@ -374,6 +374,7 @@ def write_dataset_identity_to_metadata_file(
                 (dataset_path + BASENAME_IDENTITY_METADATA).open('w') do |io|
                     YAML.dump metadata, io
                 end
+                @digest = dataset_digest
             end
 
             # Reset all metadata associated with this dataset
diff --git a/test/dsl_test.rb b/test/dsl_test.rb
index c8c02dd..9894b7a 100644
--- a/test/dsl_test.rb
+++ b/test/dsl_test.rb
@@ -55,20 +55,20 @@ module Log # :nodoc:
                 end
 
                 it "selects it by complete digest" do
-                    @context.dataset_select @dataset.digest
-                    assert_equal @dataset.digest, @context.dataset.digest
+                    @context.dataset_select "exists"
+                    assert_equal "exists", @context.dataset.digest
                 end
 
                 it "selects it by a partial digest" do
-                    @context.dataset_select @dataset.digest[0, 5]
-                    assert_equal @dataset.digest, @context.dataset.digest
+                    @context.dataset_select "exi"
+                    assert_equal "exists", @context.dataset.digest
                 end
 
                 it "selects it by metadata" do
                     @dataset.metadata_set "key", "value"
                     @dataset.metadata_write_to_file
                     @context.dataset_select "key" => "value"
-                    assert_equal @dataset.digest, @context.dataset.digest
+                    assert_equal "exists", @context.dataset.digest
                 end
 
                 it "runs an interactive picker if more than one dataset matches "\