$ git clone -n https://src.fedoraproject.org/rpms/perl-Coro-Multicore.git /var/lib/mock/f45-build-22562-593/root/chroot_tmpdir/scmroot/perl-Coro-Multicore
Cloning into '/var/lib/mock/f45-build-22562-593/root/chroot_tmpdir/scmroot/perl-Coro-Multicore'...
$ git fetch origin cb5e558206b54ff6b5e108a2aafd10bd1013a043:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Coro-Multicore
 * [new ref]         cb5e558206b54ff6b5e108a2aafd10bd1013a043 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb5e558 Rename atfork_child to coro_atfork_child to avoid collision with perl 5.43.2+