$ git clone -n https://src.fedoraproject.org/rpms/perl-Cpanel-JSON-XS.git /var/lib/mock/f41-build-816722-150376/root/chroot_tmpdir/scmroot/perl-Cpanel-JSON-XS
Cloning into '/var/lib/mock/f41-build-816722-150376/root/chroot_tmpdir/scmroot/perl-Cpanel-JSON-XS'...
$ git fetch origin 8fd16d831a222246174ae728efabc6a3d04e571f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Cpanel-JSON-XS
 * [new ref]         8fd16d831a222246174ae728efabc6a3d04e571f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8fd16d8 Perl 5.40 rebuild