$ git clone -n https://src.fedoraproject.org/rpms/lightdm-gtk-greeter-settings.git /var/lib/mock/f41-build-side-1-3001571-36465/root/chroot_tmpdir/scmroot/lightdm-gtk-greeter-settings
Cloning into '/var/lib/mock/f41-build-side-1-3001571-36465/root/chroot_tmpdir/scmroot/lightdm-gtk-greeter-settings'...
$ git fetch origin 71b53a0697995cc258b7abbb5b9219f30c21cc37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lightdm-gtk-greeter-settings
 * [new ref]         71b53a0697995cc258b7abbb5b9219f30c21cc37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71b53a0 convert GPLv3 license to SPDX