$ git clone -n https://src.fedoraproject.org/rpms/kf5-akonadi-calendar.git /var/lib/mock/f39-build-1936551-43127/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar
Cloning into '/var/lib/mock/f39-build-1936551-43127/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar'...
$ git fetch origin e2e897dc3edd038890cac2e783a5492f93df2c00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-akonadi-calendar
 * [new ref]         e2e897dc3edd038890cac2e783a5492f93df2c00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2e897d 23.08.3