mcron job with cd to directory?

[ng0 <ng0@pragmatique.xyz>]

Does someone know how you could re-create this:

(crontab -l of root)
# Regnerate stagit indexes every hour:
0 * * * * (cd /var/www/git && echo `pwd` && /root/git_pragmatique_xyz.sh)

in mcron?

I have some cronjobs where the initial
current-working-dir must be a specific directory.

I think I am missing (lambda) in what I have written below,
but the mcron documentation just

(define %stagit-job1
  #~(job '(next-hour '(4))
           (and
            (chdir "/srv/www/git/pragmatique")
            (system* "sh" "/root/git_pragmatique.xyz.sh"))))
(define %stagit-job2
  #~(job '(next-hour '(4))
           (and
            (chdir "/srv/www/git/ng0")
            (system* "sh" "/root/git_ng0.sh"))))


Of course we all know that the longterm fix is to write
an Guix service for stagit which allows multiple targets,
because stagit's example.sh is just that, an example ;)
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