$ git clone -n https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker-CPANfile.git /var/lib/mock/f45-build-23441-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker-CPANfile
Cloning into '/var/lib/mock/f45-build-23441-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker-CPANfile'...
$ git fetch origin c619d2536b5445c5ecef66b82155f3d3a5d11fc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker-CPANfile
 * [new ref]         c619d2536b5445c5ecef66b82155f3d3a5d11fc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c619d25 0.11 bump