https://the literal text https:// (case sensitive) 2nd Alternative — matches an empty string
gitlabthe literal text gitlab (case sensitive) .any character (except for line terminators)
com/volterra/the literal text com/volterra/ (case sensitive) .*any character (except for line terminators), repeated any number of times
/issues/the literal text /issues/ (case sensitive) \d+a digit, repeated at least once