$ git clone -n https://src.fedoraproject.org/rpms/perl-Plack-Middleware-Session.git /var/lib/mock/f45-build-25863-613/root/chroot_tmpdir/scmroot/perl-Plack-Middleware-Session
Cloning into '/var/lib/mock/f45-build-25863-613/root/chroot_tmpdir/scmroot/perl-Plack-Middleware-Session'...
$ git fetch origin f6f49397dbb5dd0d487cce4e45b90ed4fb584f0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Plack-Middleware-Session
 * [new ref]         f6f49397dbb5dd0d487cce4e45b90ed4fb584f0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6f4939 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild