$ git clone -n https://src.fedoraproject.org/rpms/kddockwidgets.git /var/lib/mock/f40-build-2246735-53842/root/chroot_tmpdir/scmroot/kddockwidgets
Cloning into '/var/lib/mock/f40-build-2246735-53842/root/chroot_tmpdir/scmroot/kddockwidgets'...
$ git fetch origin be936747d5f9ed35b65dd6f89babc84c71c048e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kddockwidgets
 * [new ref]         be936747d5f9ed35b65dd6f89babc84c71c048e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be93674 Rebuild (qt5)