$ git clone -n https://src.fedoraproject.org/rpms/marble.git /var/lib/mock/f42-build-871168-177474/root/chroot_tmpdir/scmroot/marble
Cloning into '/var/lib/mock/f42-build-871168-177474/root/chroot_tmpdir/scmroot/marble'...
$ git fetch origin 6d58183a0ad54c7365346fef52cb08db4dd4b86a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/marble
 * [new ref]         6d58183a0ad54c7365346fef52cb08db4dd4b86a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d58183 24.12.2