keyword: wrap dirstate mutation in `changing_files` context

This is the way.

hgext/eol.py

@@ -421,6 +421,7 b' def reposetup(ui, repo):'
                 wlock = None
                 try:
                     wlock = self.wlock()
+                    with self.dirstate.changing_files(self):
                     for f in self.dirstate:
                         if not self.dirstate.get_entry(f).maybe_clean:
                             continue
@@ -445,7 +446,6 b' def reposetup(ui, repo):'
                     # Write the cache to update mtime and cache .hgeol
                     with self.vfs(b"eol.cache", b"w") as f:
                         f.write(hgeoldata)
-                    self.dirstate.write(self.currenttransaction())
                 except errormod.LockUnavailable:
                     # If we cannot lock the repository and clear the
                     # dirstate, then a commit might not see all files