Check this out: Circumcision Revision

"When not enough of the foreskin is removed during the original circumcision, it results in a condition known as redundant foreskin. It is also considered the outcome of an “incomplete circumcision.” When the penis is flaccid, the foreskin will still cover the glans, so the organ appears as if it is uncircumcised.
For families who chose circumcision this defeats the purpose of the original procedure. Plus, though the foreskin is not entirely removed, it is shortened. This can lead to discomfort, rubbing and a build up of scar tissue, with a heightened risk of phimosis as your child grows."

From: https://www.pollockclinics.com/circumcision-revision/