$ git clone -n https://src.fedoraproject.org/rpms/perl-MooseX-Attribute-Chained.git /var/lib/mock/f45-build-25050-609/root/chroot_tmpdir/scmroot/perl-MooseX-Attribute-Chained
Cloning into '/var/lib/mock/f45-build-25050-609/root/chroot_tmpdir/scmroot/perl-MooseX-Attribute-Chained'...
$ git fetch origin 031c8f9136dadc3d2b72f110688c9246e596a0d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MooseX-Attribute-Chained
 * [new ref]         031c8f9136dadc3d2b72f110688c9246e596a0d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 031c8f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild