$ git clone -n https://src.fedoraproject.org/rpms/kjumpingcube.git /var/lib/mock/f40-build-2126097-50780/root/chroot_tmpdir/scmroot/kjumpingcube
Cloning into '/var/lib/mock/f40-build-2126097-50780/root/chroot_tmpdir/scmroot/kjumpingcube'...
$ git fetch origin ab3115eebf618e31ad20d5edc762a6c2fe32528c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kjumpingcube
 * [new ref]         ab3115eebf618e31ad20d5edc762a6c2fe32528c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab3115e 24.01.85