$ git clone -n https://src.fedoraproject.org/rpms/deepin-screensaver.git /var/lib/mock/f41-build-848523-164453/root/chroot_tmpdir/scmroot/deepin-screensaver
Cloning into '/var/lib/mock/f41-build-848523-164453/root/chroot_tmpdir/scmroot/deepin-screensaver'...
$ git fetch origin 128384e90f2d06033e086f11e9c0ea34a947d916:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/deepin-screensaver
 * [new ref]         128384e90f2d06033e086f11e9c0ea34a947d916 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 128384e remove improperly introduced rpm file