What are the music notes in A minor harmonic?

The A harmonic minor scale uses 1 sharp on the seventh degree, that would be a G♯, and you play the G♯ both when ascending and descending.

The sequence of tones and semitones in a harmonic minor scale are as follows:

Tone Semitone Tone Tone Semitone, Tone-and a half, Semitone. In A minot this is A (up a tone), B (up a semitone), C (up a tone), D (up a tone), E (up a semitone), F (up a tone-and-a-half), G♯ (up a semitone), A.