$ git clone -n https://src.fedoraproject.org/rpms/plasma-milou.git /var/lib/mock/f41-build-840577-160801/root/chroot_tmpdir/scmroot/plasma-milou
Cloning into '/var/lib/mock/f41-build-840577-160801/root/chroot_tmpdir/scmroot/plasma-milou'...
$ git fetch origin 0d8f7599acce163ad94b8b7acd748234d7836629:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-milou
 * [new ref]         0d8f7599acce163ad94b8b7acd748234d7836629 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d8f759 6.1.4