$ git clone -n https://src.fedoraproject.org/rpms/plasma-milou.git /var/lib/mock/f38-build-side-42-init-devel-628724-26371/root/chroot_tmpdir/scmroot/plasma-milou
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-628724-26371/root/chroot_tmpdir/scmroot/plasma-milou'...
$ git fetch origin 88f5937b9ff50f3c5672695a328f3b073a1b6b8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-milou
 * [new ref]         88f5937b9ff50f3c5672695a328f3b073a1b6b8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88f5937 5.27.4