$ git clone -n https://src.fedoraproject.org/rpms/perl-JSON-Create.git /var/lib/mock/f45-build-24297-603/root/chroot_tmpdir/scmroot/perl-JSON-Create
Cloning into '/var/lib/mock/f45-build-24297-603/root/chroot_tmpdir/scmroot/perl-JSON-Create'...
$ git fetch origin bdbfb27614f60ee4ba17ede1056b4d6cb328e324:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-JSON-Create
 * [new ref]         bdbfb27614f60ee4ba17ede1056b4d6cb328e324 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdbfb27 Perl 5.44 rebuild