I think it will handle it properly and not have the extra "07".
To "clear out" a string, you can set the first character to the end-of-string character (EOS) (this is how strings are terminated which is why you always need an array that is 1 character longer than the string you intend to put in it).
In some situations, you do need to do this for the code to work correctly but when using a native like this, you shouldn't have to.
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