$ git clone -n https://src.fedoraproject.org/rpms/goarrange.git /var/lib/mock/f40-build-799345-142260/root/chroot_tmpdir/scmroot/goarrange
Cloning into '/var/lib/mock/f40-build-799345-142260/root/chroot_tmpdir/scmroot/goarrange'...
$ git fetch origin abf0305058de7565f6bbd119e48337c9dab6d295:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/goarrange
 * [new ref]         abf0305058de7565f6bbd119e48337c9dab6d295 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abf0305 Initial import (fedora#2265338)