In DSS v3 (out very soon), you will have the option to see the commits in the UI. But no more action.
It is not really recommended to branch/revert DSS internal git directly. (I have personally already experimented some not pleasant situations...) If you want to do it, you should back-up.
Also be careful that if you revert to a previous version, only the metadata (which includes the schema) is reverted, the data itself is not versioned and you might get incompatibilities between data and schema.