$ git clone -n https://src.fedoraproject.org/rpms/kjumpingcube.git /var/lib/mock/f42-build-863585-171716/root/chroot_tmpdir/scmroot/kjumpingcube
Cloning into '/var/lib/mock/f42-build-863585-171716/root/chroot_tmpdir/scmroot/kjumpingcube'...
$ git fetch origin 39a550c627abedc7f429cd73df0f97ba8820ebdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kjumpingcube
 * [new ref]         39a550c627abedc7f429cd73df0f97ba8820ebdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39a550c 24.12.0