After a git reset --hard command has been executed, any changes made to the files in the repository before the reset will no longer be available and cannot be recovered. This command is a destructive operation, as it discards all changes in the working tree and reverts the branch to its previous state, effectively erasing any commits and data that were added after that point. 

To ensure safety and the ability to revert changes if needed, it is advisable to always make a backup or create a separate branch before executing the reset command.
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