$ git clone -n https://src.fedoraproject.org/rpms/opensips.git /var/lib/mock/f41-build-838650-159743/root/chroot_tmpdir/scmroot/opensips
Cloning into '/var/lib/mock/f41-build-838650-159743/root/chroot_tmpdir/scmroot/opensips'...
$ git fetch origin f4df946770d07f82e96ece5ceb5958485679416e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opensips
 * [new ref]         f4df946770d07f82e96ece5ceb5958485679416e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4df946 Spec-file cleanup