$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Server-Coro.git /var/lib/mock/f45-build-25381-610/root/chroot_tmpdir/scmroot/perl-Net-Server-Coro
Cloning into '/var/lib/mock/f45-build-25381-610/root/chroot_tmpdir/scmroot/perl-Net-Server-Coro'...
$ git fetch origin 21457fce5074dc1b959706754ec2311d4c7f3db0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Server-Coro
 * [new ref]         21457fce5074dc1b959706754ec2311d4c7f3db0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21457fc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild