$ git clone -n https://src.fedoraproject.org/rpms/plasma-milou.git /var/lib/mock/f40-build-2160764-50941/root/chroot_tmpdir/scmroot/plasma-milou
Cloning into '/var/lib/mock/f40-build-2160764-50941/root/chroot_tmpdir/scmroot/plasma-milou'...
$ git fetch origin 9eaf0190492f9208fcc6b24fd6144decd100fbbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-milou
 * [new ref]         9eaf0190492f9208fcc6b24fd6144decd100fbbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9eaf019 5.91.0