importer: cleanup should be happening if there's no meta

There are cases where upstream (stream 10 for example) have repos for
packages that they plan or will ship, but there are no references
associated. Meaning, there's no branches, there's no data, nothing to
work off of.

pv2/importer/operation.py

@@ -765,6 +765,7 @@ class GitImport(Import):
         # Within the confines of the source git repo, we need to find a
         # "sources" file or a metadata file. One of these will determine which
         # route we take.
+        metafile_to_use = None
         if os.path.exists(metadata_file):
             no_metadata_list = ['stream', 'fedora']
             if any(ignore in self.upstream_lookaside for ignore in no_metadata_list):
@@ -779,10 +780,16 @@ class GitImport(Import):
             metafile_to_use = sources_file
         else:
             #raise err.GenericError('sources or metadata file NOT found')
-            print('WARNING: There was no sources or metadata found. Making blank file.')
+            # There isn't a reason to make a blank file right now.
+            print('WARNING: There was no sources or metadata found.')
             with open(metadata_file, 'w+') as metadata_handle:
                 pass
 
+        if not metafile_to_use:
+            print('Source: There was no metadata file found. Skipping import attempt.')
+            self.perform_cleanup([source_git_repo_path, dest_git_repo_path])
+            return False
+
         sources_dict = self.parse_metadata_file(metafile_to_use)
 
         # We need to check if there is a SPECS directory and make a SOURCES
@@ -811,7 +818,8 @@ class GitImport(Import):
             source_git_repo_spec = self.find_spec_file(source_git_repo_path)
 
         # do rpm autochangelog logic here
-        if HAS_RPMAUTOSPEC and os.path.exists(source_git_repo_changelog):
+        #if HAS_RPMAUTOSPEC and os.path.exists(source_git_repo_changelog):
+        if HAS_RPMAUTOSPEC:
             # Check that the spec file really has %autochangelog
             AUTOCHANGELOG = False
             with open(source_git_repo_spec, 'r') as spec_file:
@@ -1142,7 +1150,7 @@ class ModuleImport(Import):
 
         with open(modulemd_file, 'r') as module_yaml:
             content = module_yaml.read()
-            content_new = re.sub('ref:\s+(.*)', f'ref: {dest_branch}', content)
+            content_new = re.sub(r'ref:\s+(.*)', f'ref: {dest_branch}', content)
             module_yaml.close()
 
         # Write to the root

pv2/util/gitutil.py

@@ -139,8 +139,11 @@ def tag(repo, tag_name:str, message: str):
 
 def lsremote(url):
     """
-    Helps check if a repo exists, and if it does, return references. If not,
-    return None and assume it doesn't exist.
+    Helps check if a repo exists.
+
+    If repo exists: return references
+    If repo exists and is completely empty: return empty dict
+    If repo does not exist: return None
     """
     remote_refs = {}
     git_cmd = rawgit.cmd.Git()
@@ -153,5 +156,6 @@ def lsremote(url):
 
     for ref in git_cmd.ls_remote(url).split('\n'):
         hash_ref_list = ref.split('\t')
-        remote_refs[hash_ref_list[1]] = hash_ref_list[0]
+        if len(hash_ref_list) > 1:
+            remote_refs[hash_ref_list[1]] = hash_ref_list[0]
     return remote_refs

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pv2"
-version = "0.11.0"
+version = "0.12.0"
 description = "PV2 backend framework module"
 readme = "README.md"
 authors = [
@@ -11,7 +11,7 @@ maintainers = [
   { name = "Louis Abel", email = "label@rockylinux.org" }
 ]
 
-requires-python = ">=3.6"
+requires-python = ">=3.9"
 
 dependencies = [
   "GitPython >= 3.1.30",