$ git clone -n https://src.fedoraproject.org/rpms/frr.git /var/lib/mock/f40-build-752828-116991/root/chroot_tmpdir/scmroot/frr
Cloning into '/var/lib/mock/f40-build-752828-116991/root/chroot_tmpdir/scmroot/frr'...
$ git fetch origin 30f4eb8e8efcdc43f09ef165c37536d7fe9829d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frr
 * [new ref]         30f4eb8e8efcdc43f09ef165c37536d7fe9829d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30f4eb8 New version 9.0.1