$ git clone -n https://src.fedoraproject.org/rpms/fedpkg.git /var/lib/mock/f41-build-side-1-2786485-32612/root/chroot_tmpdir/scmroot/fedpkg
Cloning into '/var/lib/mock/f41-build-side-1-2786485-32612/root/chroot_tmpdir/scmroot/fedpkg'...
$ git fetch origin 7185284dac1eaabaa38a57911848b65aa0b8ed72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fedpkg
 * [new ref]         7185284dac1eaabaa38a57911848b65aa0b8ed72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7185284 A few patches: