$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Format-XSD.git /var/lib/mock/f45-build-22968-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-XSD
Cloning into '/var/lib/mock/f45-build-22968-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-XSD'...
$ git fetch origin b1e8398ed174e1df9c3ac54843654bb086ed2a2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Format-XSD
 * [new ref]         b1e8398ed174e1df9c3ac54843654bb086ed2a2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1e8398 Update to 0.5