$ git clone -n https://src.fedoraproject.org/rpms/perl-Term-Size.git /var/lib/mock/f45-build-26535-618/root/chroot_tmpdir/scmroot/perl-Term-Size
Cloning into '/var/lib/mock/f45-build-26535-618/root/chroot_tmpdir/scmroot/perl-Term-Size'...
$ git fetch origin 20e8d6e3fe6cdbdf581f281a8113c5836dafc691:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Term-Size
 * [new ref]         20e8d6e3fe6cdbdf581f281a8113c5836dafc691 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20e8d6e Perl 5.44 rebuild