How to run/execute the Nuget commands inside bash scripts?

I am building a Nuget package on my windows machine. When I run the below command in win cmd prompt

nuget spec myProj.cs

It generate a myproj.nusepc files & so on.

But when I am trying to run the same command from bash client (Git bash on windows as client) as

bash nuget spec myProj.cs

It throws the error > nuget: nuget: cannot execute binary file

Please note that Nuget.exe is available under the same folder as the terminal pwd

How can I run/execute the nuget commands inside bash scripts?

Thanks!