Emacs mirror on Emba stalled

[Michael Albinus]

Hi,

mirroring the Emacs git repo seems to be stalled on emba. Running
/root/mirror-emacs.sh manually results in

--8<---------------cut here---------------start------------->8---
<13>Oct  2 03:33:17 mirror-emacs.sh: Fetching origin
<13>Oct  2 03:33:17 mirror-emacs.sh: fatal: unable to access 
'https://git.savannah.gnu.org/git/emacs.git/': server certificate verification 
failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
<13>Oct  2 03:33:17 mirror-emacs.sh: error: Could not fetch origin
--8<---------------cut here---------------end--------------->8---

Could somebody pls have a look on this? I have no idea how to fix this.

Thanks, and best regards, Michael.