$ git clone -n https://src.fedoraproject.org/rpms/marble.git /var/lib/mock/f40-build-2219907-52644/root/chroot_tmpdir/scmroot/marble
Cloning into '/var/lib/mock/f40-build-2219907-52644/root/chroot_tmpdir/scmroot/marble'...
$ git fetch origin 605774f11140d1f67dfd234ec639458b6f91ea27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/marble
 * [new ref]         605774f11140d1f67dfd234ec639458b6f91ea27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 605774f 24.01.85 (Qt5)