stgit 0.19-1.1 (s390x binary) in ubuntu lunar

 stgit provides similar functionality to quilt
 (i.e. pushing/popping patches to/from a stack) on top of git.
 .
 These operations are performed using git commands and the patches
 are stored as git commit objects, allowing easy merging of the stgit
 patches into other repositories using standard git functionality.