The process in which a myoblast migrates along an entire fiber to the site of injury. A myoblast is a mononucleate cell type that, by fusion with other myoblasts, gives rise to the myotubes that eventually develop into skeletal muscle fibers. [ http://purl.obolibrary.org/obo/CL_0000056 http://www.ncbi.nlm.nih.gov/pubmed/16607119 GOC:mtg_muscle GOC:ef ]