$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Denter.git /var/lib/mock/f40-build-2016347-46181/root/chroot_tmpdir/scmroot/perl-Data-Denter
Cloning into '/var/lib/mock/f40-build-2016347-46181/root/chroot_tmpdir/scmroot/perl-Data-Denter'...
$ git fetch origin a1511434818861fa1176ab4550582ff808746522:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Denter
 * [new ref]         a1511434818861fa1176ab4550582ff808746522 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a151143 Update license to SPDX format; Use %%{make_build} and %%{make_install}