Most roofers would just lift the tab and put a little squirt of asphalt roofing cement dispensed from a caulk gun on the hole before folding the tab back down.
How to use roofing cement over nail holes.
Be careful not to bend the nails as you drive them.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
If you find any nail heads that are sticking up from the roof hammer them down and then coat the head with roofing.
Reposition the board over the pilot holes aligning the board with the marks on the floor.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.
Wear gloves when working with sticky roofing cement.
There are lots of ways to repair nail holes in asphalt shingles.
Add a bead of caulk or roof cement to the top and bottom edge of the flashing to keep it in place.
If the holes are larger than nail holes use tin snips to cut a strip of flashing the same amterial as the gutter wide.
How to use roof cement.
Fixing rust spots and joints in leaky gutters and metal trim.
Feather the roofing cement out on the surrounding area to flatten any steep edges.
Insert concrete or masonry nails into the holes and drive them flush to the surface of the wood using a framing hammer.