$ git clone -n https://src.fedoraproject.org/rpms/vpnc.git /var/lib/mock/f45-build-38160-722/root/chroot_tmpdir/scmroot/vpnc
Cloning into '/var/lib/mock/f45-build-38160-722/root/chroot_tmpdir/scmroot/vpnc'...
$ git fetch origin 1aec1b6b7eb4dce4e73596f6d27f87a638ed793c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vpnc
 * [new ref]         1aec1b6b7eb4dce4e73596f6d27f87a638ed793c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1aec1b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild