import hashlib
import zlib
import sys

def calculate_git_hash(file_path):
    # Read the file content
    with open(file_path, 'rb') as f:
        content = f.read()
        
    # Decompress the zlib-compressed content
    decompressed_content = zlib.decompress(content)
    
    # Calculate the SHA-1 hash of the decompressed content
    sha1 = hashlib.sha1(decompressed_content).hexdigest()
    
    return sha1

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: python get_hash.py <path_to_git_object_file>")
    else:
        file_path = sys.argv[1]
        hash_value = calculate_git_hash(file_path)
        print(f"{hash_value}")