Go back to an old source

• Repeat a bugging job
• Do a new bugging job
• Mend shoes, in a way
• Put another hole in the keg
• Draw on again
• Put another hole in, as a keg
• Bug phone lines again
• Open again, as a keg

Wiktionary Word definitions in Wiktionary
vb. (context transitive English) To tap again (in various senses).