$ git clone -n https://src.fedoraproject.org/rpms/kf5-akonadi-calendar.git /var/lib/mock/f39-test-2571107-62244/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar
Cloning into '/var/lib/mock/f39-test-2571107-62244/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar'...
$ git fetch origin a59bb7db71f04b26e6e603c3d759bdc15e7015a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-akonadi-calendar
 * [new ref]         a59bb7db71f04b26e6e603c3d759bdc15e7015a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a59bb7d 23.08.5