Git commit error when saving edits

[simon-brooke]

This just started, as far as I can recall, with the latest installation of the develop branch on Goldsmith:

22-02-22 11:45:49 goldsmith.journeyman.cc INFO [smeagol.routes.wiki:72] - Saving simon's changes ('simon: Testing to see if I can reproduce Git crash') to Index by date in file '/home/simon/blog/public/content/Index by date.md'
22-02-22 11:45:49 goldsmith.journeyman.cc ERROR [smeagol.middleware:69] - {:error #error {
 :cause "Wrong number of args (6) passed to: porcelain/git-commit"
 :via
 [{:type clojure.lang.ArityException
   :message "Wrong number of args (6) passed to: porcelain/git-commit"
   :at [clojure.lang.AFn throwArity "AFn.java" 429]}]
 :trace
 [[clojure.lang.AFn throwArity "AFn.java" 429]
  [clojure.lang.AFn invoke "AFn.java" 52]
  [smeagol.routes.wiki$process_source invokeStatic "wiki.clj" 75]
  [smeagol.routes.wiki$process_source invoke "wiki.clj" 59]