$ git clone -n https://src.fedoraproject.org/rpms/kf5-akonadi-server.git /var/lib/mock/f40-build-2165577-50976/root/chroot_tmpdir/scmroot/kf5-akonadi-server
Cloning into '/var/lib/mock/f40-build-2165577-50976/root/chroot_tmpdir/scmroot/kf5-akonadi-server'...
$ git fetch origin 65a9f822934f7d67ad3288a0b318a7d33eba2273:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-akonadi-server
 * [new ref]         65a9f822934f7d67ad3288a0b318a7d33eba2273 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65a9f82 Include translations in libs subpackage