$ git clone -n https://src.fedoraproject.org/rpms/connect-proxy.git /var/lib/mock/f45-build-5192-338/root/chroot_tmpdir/scmroot/connect-proxy
Cloning into '/var/lib/mock/f45-build-5192-338/root/chroot_tmpdir/scmroot/connect-proxy'...
$ git fetch origin c85cf6627c9ddfc190b76e487bbf463e78f2c44e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/connect-proxy
 * [new ref]         c85cf6627c9ddfc190b76e487bbf463e78f2c44e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c85cf66 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild