$ git clone -n https://src.fedoraproject.org/rpms/perl-Plack-Test-Agent.git /var/lib/mock/f45-build-25804-613/root/chroot_tmpdir/scmroot/perl-Plack-Test-Agent
Cloning into '/var/lib/mock/f45-build-25804-613/root/chroot_tmpdir/scmroot/perl-Plack-Test-Agent'...
$ git fetch origin 1fe4ad8dedd5e679e95de18ea7af445703975983:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Plack-Test-Agent
 * [new ref]         1fe4ad8dedd5e679e95de18ea7af445703975983 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fe4ad8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild