$ git clone -n https://src.fedoraproject.org/rpms/rsyslog.git /var/lib/mock/f40-build-793493-138985/root/chroot_tmpdir/scmroot/rsyslog
Cloning into '/var/lib/mock/f40-build-793493-138985/root/chroot_tmpdir/scmroot/rsyslog'...
$ git fetch origin 1e6869a68124e0ab4b03c7ee98592e8047715cef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rsyslog
 * [new ref]         1e6869a68124e0ab4b03c7ee98592e8047715cef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e6869a Rebase to 8.2312.0   resolves: rhbz#2232275