$ git clone -n https://src.fedoraproject.org/rpms/kjumpingcube.git /var/lib/mock/f39-build-1676970-40954/root/chroot_tmpdir/scmroot/kjumpingcube
Cloning into '/var/lib/mock/f39-build-1676970-40954/root/chroot_tmpdir/scmroot/kjumpingcube'...
$ git fetch origin c1907310549b1470913a930ec8a858d61f722065:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kjumpingcube
 * [new ref]         c1907310549b1470913a930ec8a858d61f722065 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c190731 23.08.2