Might post a close-up pic of the damaged tip. Depending on how bad it looks, you might get a wide range of possible suggested fixes for it. Some are much easier than others to fix. Smaller damage might be quickly worked out on a simple stone, whereas heavier damage may need heavy grinding to completely re-shape the tip's profile.
Lighter damage can often be straightened out by drawing the spine of the tip in a trailing direction across a coarse/medium-grit stone (diamond or SiC work best), or wet/dry sandpaper in ~220-400 grit on a hard backing, like stone or glass. The idea is to gradually hone down the spine to sharply meet a clean & undamaged portion of the cutting edge, nearest to the tip. Keep the blade's spine as low as possible, or flush to the stone if the spine is dead-straight/flat (as is my PM's spine), to keep the resulting new tip as sharp and acute as possible. Some additional honing might be needed if any of the remaining cutting edge is rolled/chipped.
David