Hello,
looking for a way to build new tags, found the basic branch build strategies plugin, but it is no more maintained, what is the best way to build newly discovered tags?
Hello @ines.ouledelhaj 
You could maybe try that: in a new Jenkins job set refspec to +refs/tags/*:refs/remotes/origin/tags/* . Set the branch specifier to **/tags/** . This should configure the job so it only responds to new tags.
I’m using the multi-branch pipeline and there is nor refspec neither branch specifier in this kind of jobs