@Vineet S - Thanks for the question and using MS Q&A platform.
You can create a new branch in Azure Data Factory/ Synapse Analytics to create a backup of the development branch.
You can later use the same brach to import existing Data Factory resources to repository
According to the official document: Source control in Azure Data Factory
OR
You can directly download the supported JSON files from ADF/Synapse studio and upload the same wherever you want (example: In an ADLS gen2 account or local system).
Hope this helps. Do let us know if you have any further queries.
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