push.py: axisregistry and lang paths check does not use expected path
Based on https://github.com/google/fonts/pull/5147#discussion_r958226762, the google/fonts axisregistry directory path checks in the to_sandbox.txt and to_production.txt files should use the following path syntax:

```
axisregistry/[AXIS].textproto
```

instead of the actual file path in the repository:

```
axisregistry/Lib/axisregistry/data/[AXIS].textproto
```

Language files need to be:
```
lang/languages/[LANG].textproto
```

Not

```
lang/Lib/gflanguages/data/languages/[LANG].textproto
```

An example failing CI test is https://github.com/google/fonts/runs/8103625159?check_suite_focus=true
diff --git a/Lib/gftools/push.py b/Lib/gftools/push.py
index cc787a0..f9a106c 100644
--- a/Lib/gftools/push.py
+++ b/Lib/gftools/push.py
@@ -98,22 +98,51 @@ def push_report(fp):
     server_push_report("Sandbox", sandbox_path, SANDBOX_URL)
 
 
+# The internal Google fonts team store the axisregistry and lang directories
+# in a different location. The two functions below tranform paths to
+# whichever representation you need.
+def repo_path_to_google_path(fp):
+    """lang/Lib/gflanguages/data/languages/.*.textproto --> lang/languages/.*.textproto"""
+    # we rename lang paths due to: https://github.com/google/fonts/pull/4679
+    if "languages" in fp.parts:
+        return Path("lang") / "languages" / fp.name
+    # https://github.com/google/fonts/pull/5147
+    elif "axisregistry" in fp.parts:
+        return Path("axisregistry") / fp.name
+    else:
+        raise ValueError(f"No transform found for path {fp}")
+
+
+def google_path_to_repo_path(fp):
+    """lang/languages/.*.textproto --> lang/Lib/gflanguages/data/languages/.*.textproto"""
+    if "languages" in fp.parts:
+        return fp.parent.parent / "Lib" / "gflanguages" / "data" / "languages" / fp.name
+    elif "axisregistry" in fp.parts:
+        return fp.parent / "Lib" / "axisregistry" / "data" / fp.name
+    else:
+        raise ValueError(f"No transform found for path {fp}")
+
+
 def missing_paths(fp):
     paths = [fp.parent / p.path for p in parse_server_file(fp)]
-    lang_files = [p for p in paths if "lang" in p.parts]
-    axis_files = [p for p in paths if p.name.endswith(("textproto", "svg")) if p not in lang_files]
-    dirs = [p for p in paths if p not in axis_files + lang_files]
+    font_paths = [p for p in paths if any(d in p.parts for d in ("ofl", "ufl", "apache"))]
+    lang_paths = [p for p in paths if "lang" in p.parts]
+    axis_paths = [p for p in paths if "axisregistry" in p.parts]
+    misc_paths = [p for p in paths if p not in font_paths+lang_paths+axis_paths]
 
-    missing_dirs = [p for p in dirs if not p.is_dir()]
-    missing_axis_files = [p for p in axis_files if not p.is_file()]
-    missing_lang_files = [p for p in lang_files if not
-        (p.parent.parent / "Lib" / "gflanguages" / "data" / "languages" / lang_files[0].name).is_file()
-    ]
-    return missing_dirs + missing_axis_files + missing_lang_files
+    missing_paths = [p for p in misc_paths+font_paths if not p.exists()]
+    missing_lang_files = [p for p in lang_paths if not google_path_to_repo_path(p).exists()]
+    missing_axis_files = [p for p in axis_paths if not google_path_to_repo_path(p).exists()]
+    return missing_paths + missing_lang_files + missing_axis_files
 
 
 def lint_server_files(fp):
     template = "{}: Following paths are not valid:\\n{}\\n\\n"
+    footnote = (
+        "lang and axisregistry dir paths need to be transformed.\\n"
+        "See https://github.com/googlefonts/gftools/issues/603"
+    )
+
     prod_path = fp / "to_production.txt"
     prod_missing = "\\n".join(map(str, missing_paths(prod_path)))
     prod_msg = template.format("to_production.txt", prod_missing)
@@ -123,10 +152,10 @@ def lint_server_files(fp):
     sandbox_msg = template.format("to_sandbox.txt", sandbox_missing)
 
     if prod_missing and sandbox_missing:
-        raise ValueError(prod_msg + sandbox_msg)
+        raise ValueError(prod_msg + sandbox_msg + footnote)
     elif prod_missing:
-        raise ValueError(prod_msg)
+        raise ValueError(prod_msg + footnote)
     elif sandbox_missing:
-        raise ValueError(sandbox_msg)
+        raise ValueError(sandbox_msg + footnote)
     else:
         print("Server files have valid paths")
diff --git a/bin/gftools-gen-push-lists.py b/bin/gftools-gen-push-lists.py
index 4506f8f..3de159e 100755
--- a/bin/gftools-gen-push-lists.py
+++ b/bin/gftools-gen-push-lists.py
@@ -18,25 +18,24 @@ from github import Github
 from collections import defaultdict
 import os
 import sys
+from pathlib import Path
+from gftools.push import repo_path_to_google_path
 
 
 def pr_directories(pr):
     results = set()
     files = pr.get_files()
     for f in files:
-        filename = f.filename
-        if filename.endswith(".textproto") and filename.startswith(("lang", "axisregistry")):
-            # we rename lang paths due to: https://github.com/google/fonts/pull/4679
-            if filename.startswith("lang"):
-                filename = filename.replace('lang/Lib/gflanguages/data/languages/', 'lang/languages/')
-            results.add(filename)
+        path = Path(f.filename)
+        if path.suffix == ".textproto" and any(d in path.parts for d in ("lang", "axisregistry")):
+            results.add(repo_path_to_google_path(path))
         else:
-            filename = os.path.dirname(filename)
+            path = path.parent
             # If a noto article has been updated, just return the family dir
             # ofl/notosans/article --> ofl/notosans
-            if "article" in filename:
-                filename = os.path.dirname(filename)
-            results.add(filename)
+            if "article" in path.parts:
+                path = path.parent
+            results.add(str(path))
     return results
 
 
['bin/gftools-gen-push-lists.py', 'Lib/gftools/push.py']