How to verify data dumps between two MS SQL and MySQL
There can be various reasons why file hashes different:


Line Endings differ;
Spacing might differ (tabs vs spaces);
Different layout for same data
Encoding (of the file that data is saved in)
Quotes (single vs double)
Case sensitivity


What I would do, is compare both files with diff tool. git diff can come in help here as it has ability to diff word by word and if you pass it --no-index option don't even have to place them in git repository. This command can help

$ git diff --no-index --color-words file1.txt file2.txt