If I pay back a $20k signing bonus, do I get my taxes back on it?

If I take a job that has $20k signing bonus that has a 1-year payback penalty if I don't work there a year, then I end up leaving early. I have to pay it back. What happens with the taxes? Will I get back the ~$6,800 in taxes on my tax return, since that $20k income will be undone?