$ git clone -n https://src.fedoraproject.org/rpms/akonadi-calendar.git /var/lib/mock/f42-build-872001-177853/root/chroot_tmpdir/scmroot/akonadi-calendar
Cloning into '/var/lib/mock/f42-build-872001-177853/root/chroot_tmpdir/scmroot/akonadi-calendar'...
$ git fetch origin a7b8cd335e81787b5692d367299a146668a2c76b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/akonadi-calendar
 * [new ref]         a7b8cd335e81787b5692d367299a146668a2c76b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7b8cd3 24.12.2