Rebecca is the one to comment, but I’ll offer some anecdotes (which may therefore be nonsense…)
The best time for me to do anything fasted is first thing in the morning right after I get up. Coffee helps postpone any hunger. Once I’m moving, I feel fine for quite a while.
However, if I try a fasted session later in the day, I usually bonk much quicker, and it feels worse. I assume that this is because of glycogen depletion during the day perhaps.
So if there’s a delay in the morning (driving to a far trailhead, etc) or if I’m training later in the day, I’ve used hard-boiled eggs to stave off the bonky feeling.
So as far as making the sessions feel better, that works for me. But whether or not they have the same effect as a purely fasted session, I don’t know.