The command you are looking for is “ClearCheckSums”. Find more about it here.
clearCheckSums clears all checksums and nullifies the MD5SUM column of the DATABASECHANGELOG table so they will be re-computed on the next database update.
changesets that have been deployed will have their checksums re-computed, and pending changesets will be deployed.
On the next database update, liquibase will run only those changesets which were not executed earlier however will calculate a new MD5 checksum value for already executed changesets.
You can give it a try. Hope this helps. Please let us know if you encounter any other issues with this.