$ git clone -n https://src.fedoraproject.org/rpms/xmvn-connector-ivy.git /var/lib/mock/f39-build-1853646-42373/root/chroot_tmpdir/scmroot/xmvn-connector-ivy
Cloning into '/var/lib/mock/f39-build-1853646-42373/root/chroot_tmpdir/scmroot/xmvn-connector-ivy'...
$ git fetch origin 08733d68a1ba0ad0ec419deb9e00c23e03af607e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmvn-connector-ivy
 * [new ref]         08733d68a1ba0ad0ec419deb9e00c23e03af607e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08733d6 Update to upstream version 4.0.0