$ git clone -n https://src.fedoraproject.org/rpms/deepin-dock.git /var/lib/mock/f41-build-847242-163867/root/chroot_tmpdir/scmroot/deepin-dock
Cloning into '/var/lib/mock/f41-build-847242-163867/root/chroot_tmpdir/scmroot/deepin-dock'...
$ git fetch origin 04cefec18bf62a5f849e6ac0b0a501d54ae3f45c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/deepin-dock
 * [new ref]         04cefec18bf62a5f849e6ac0b0a501d54ae3f45c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04cefec qt5 rebuild