$ git clone -n https://src.fedoraproject.org/rpms/perl-Plack-Middleware-ReverseProxy.git /var/lib/mock/f45-build-25848-613/root/chroot_tmpdir/scmroot/perl-Plack-Middleware-ReverseProxy
Cloning into '/var/lib/mock/f45-build-25848-613/root/chroot_tmpdir/scmroot/perl-Plack-Middleware-ReverseProxy'...
$ git fetch origin cf62c6be674270c27c076c74b06bec75a991ff80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Plack-Middleware-ReverseProxy
 * [new ref]         cf62c6be674270c27c076c74b06bec75a991ff80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf62c6b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild