vc-delete-logbuf-window

vc-delete-logbuf-window is a variable defined in `vc-dispatcher.el'.
Its value is

t

Documentation:
If non-nil, delete the log buffer and window after each logical action.
If nil, bury that buffer instead.
This is most useful if you have multiple windows on a frame and would like to
preserve the setting.

You can customize this variable.