How to use custom git command when building on remote host?

I am in the process of transferring a project from being built with MinGW to using a remote host on a Linux VM because of how much faster the build times are. Everything so far has been smooth except for one issue.

My project uses a git command to get the current commit hash for inserting into a version.h file, but when git runs on the remote host, it fails out with 

fatal: not a git repository (or any of the parent directories): .git

Which makes sense, as CLION didn't send any git information over to the remote host. Is there an easy solution to this? For reference, the command I'm using is below:

# Get the hash for HEAD.
set(_success "true")
execute_process(COMMAND
        "${GIT_EXECUTABLE}" rev-parse --verify HEAD
        WORKING_DIRECTORY "${_working_dir}"
        RESULT_VARIABLE res
        OUTPUT_VARIABLE _hashvar
        ERROR_QUIET
        OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT res EQUAL 0)
    set(_success "false")
    set(_hashvar "GIT-NOTFOUND")
endif()

execute_process(COMMAND
    "${GIT_EXECUTABLE}" describe --dirty
    WORKING_DIRECTORY "${_working_dir}"
    RESULT_VARIABLE res
    OUTPUT_VARIABLE _version
    ERROR_QUIET
    OUTPUT_STRIP_TRAILING_WHITESPACE)