there is no need to change.

notation 1=G, which means that the song is a major song, and the corresponding sound names of roll-call 1 are g, which is a reflection of the roll-call method of music. It means to make G sound like the feeling of 1, sing whatever you see, do when you see 1, and re when you see 2. But notice that the pitch of this do is not the pitch of c, but the pitch of g.

Related introduction:

The first tune roll-call method can simplify the procedure of reading music. The roll names do, re, mi, fa, sol, la, ti, etc. are used to represent the seven scales associated with a tonic. The first tone roll-call method makes the position of each tone level relatively fixed in its tonality, thus forming a typical and stable feeling.

the first-tone singing method is a mode-based singing method, which sings the tonic (I-tone) of the major mode as do, and others as re, mi, fa, sol, la and si in turn. It sings the minor tonic (I-tone) as la, and others as si, do, re, mi, fa and sol in turn. In this way, only in C major and A minor, the corresponding relationship between roll name and sound name is the same, and other tonality is different.