$ git clone -n https://src.fedoraproject.org/rpms/kf6-kwindowsystem.git /var/lib/mock/f41-build-849174-164777/root/chroot_tmpdir/scmroot/kf6-kwindowsystem
Cloning into '/var/lib/mock/f41-build-849174-164777/root/chroot_tmpdir/scmroot/kf6-kwindowsystem'...
$ git fetch origin 7e0818d06810d298315637117956c697b953798e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kwindowsystem
 * [new ref]         7e0818d06810d298315637117956c697b953798e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e0818d 6.6.0