$ git clone -n https://src.fedoraproject.org/rpms/firewalld.git /var/lib/mock/f39-build-2329481-58921/root/chroot_tmpdir/scmroot/firewalld
Cloning into '/var/lib/mock/f39-build-2329481-58921/root/chroot_tmpdir/scmroot/firewalld'...
$ git fetch origin 63321c164f1f98b2bdd28479cd3e36f6d69ff764:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/firewalld
 * [new ref]         63321c164f1f98b2bdd28479cd3e36f6d69ff764 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63321c1 rebase to v2.0.3