I downloaded Electron-Cash-2.9.4.exe from https://electroncash.org/downloads/2.9.4/win-linux/

In the SHA1.Electron-Cash-2.9.4.exe.txt file in https://github.com/fyookball/keys-n-hashes/blob/master/sigs-and-sums/2.9.4/win-linux/ , the checksum is given as a7a780c049f26734dd9fb8ff6eb6646546bfa638  

Whereas when I find the SHA1 of the downloaded application (using HashMyFiles or IgorWare Hasher), it comes out to be 6618ca0ed201f2958212149e183063c7f1ba3d0

What's going wrong?

Also, the downloaded application is of 6MB? Should it be more?