$ git clone -n https://src.fedoraproject.org/rpms/perl-CPAN-Meta.git /var/lib/mock/f41-build-815658-149668/root/chroot_tmpdir/scmroot/perl-CPAN-Meta
Cloning into '/var/lib/mock/f41-build-815658-149668/root/chroot_tmpdir/scmroot/perl-CPAN-Meta'...
$ git fetch origin 7b5a861c60b3beb5231a6228c7aaab096b709df8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPAN-Meta
 * [new ref]         7b5a861c60b3beb5231a6228c7aaab096b709df8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b5a861 Increase release to favour standalone package