Yes.
F sharp is the enharmonic.
g#
The enharmonic note of Gb is F#
b
notes that are called different but have the same fingerings. Examples: c# and b natural. This idea is useful when, for example, a composer is in the process of writing harmony for music that is moving from one key to another.
That's a key that only exists in theory and not in practice (called an imaginary key), because it would have more than 7 flats. The key of G minor has 2 flats (Bb and Eb), so then key of G-flat minor would then have 9 flats. (The notes of that imaginary scale would be: Gb, Ab, Bbb, Cb, Db, Ebb, Fb, Gb) The enharmonic equivalent to G-flat is F-sharp, and F-sharp minor has 3 sharps.
Enharmonic notes in music are notes that sound the same but are written differently, for example: G# and Ab.
G #/ Ab
Ab
A note that has different names but sounds the same is called an enharmonic note. For example, G# and Ab are enharmonic notes because they are played at the same pitch on a musical instrument, even though they are named differently.
Eb/D# (E flat/D sharp) - Eb, G, Bb Db/C# (D flat/C sharp) - Db, F, Ab Ab/G# (A flat/G sharp) - AB, C, Eb Gb/F# (G flat/F sharp) - Gb, Bb, Db
The ab major equivalent of the keyword provided is G major.