Add and remove literal files

pathspec in git has special characters that we should not trigger.
Assume every filespec as literal

lib/git.py

@@ -85,7 +85,7 @@ class Git:
         """Checkout into the branch HEAD"""
         new_branch = False
         if branch not in self.branches():
-            self.git_run(["branch", "-q", branch, "HEAD"])
+            self.git_run(["switch", "-q", "--orphan", branch])
             new_branch = True
         else:
             ref = f"refs/heads/{branch}"
@@ -180,7 +180,13 @@ class Git:
     #                logging.warning(f"Error removing file {path}: {e}")
 
     def add(self, filename):
-        self.git_run(["add", filename])
+        self.git_run(["add", ":(literal)" + filename])
+
+    def add_default_gitignore(self):
+        if not (self.path / ".gitignore").exists():
+            with (self.path / ".gitignore").open("w") as f:
+                f.write(".osc\n")
+            self.add(".gitignore")
 
     def add_default_lfs_gitattributes(self, force=False):
         if not (self.path / ".gitattributes").exists() or force:
@@ -235,7 +241,7 @@ class Git:
 
     def remove(self, file: pathlib.Path):
         self.git_run(
-            ["rm", "-q", "-f", "--ignore-unmatch", file.name],
+            ["rm", "-q", "-f", "--ignore-unmatch", ":(literal)" + file.name],
         )
         patterns = self.get_specific_lfs_gitattributes()
         if file.name in patterns:

lib/git_exporter.py

@@ -86,6 +86,11 @@ class GitExporter:
             logging.debug(f"Committing {flat}")
             self.commit_flat(flat, branch_state)
 
+        # make sure that we create devel branch
+        if not branch_state["devel"]:
+            logging.debug("force creating devel")
+            self.git.set_branch_head("devel", self.git.branch_head("factory"))
+
         self.git.push(force=True)
 
     def run_gc(self):
@@ -150,6 +155,7 @@ class GitExporter:
 
         # create file if not existant
         self.git.add_default_lfs_gitattributes(force=False)
+        self.git.add_default_gitignore()
 
         to_download, to_delete = flat.commit.calc_delta(branch_state[flat.branch])
         for file in to_delete: