$ git clone -n https://src.fedoraproject.org/rpms/plasma-milou.git /var/lib/mock/f41-build-851505-165989/root/chroot_tmpdir/scmroot/plasma-milou
Cloning into '/var/lib/mock/f41-build-851505-165989/root/chroot_tmpdir/scmroot/plasma-milou'...
$ git fetch origin 11cf316d0c666fb0999f5fe8d185fe0e90ca8f2a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-milou
 * [new ref]         11cf316d0c666fb0999f5fe8d185fe0e90ca8f2a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11cf316 6.1.90