$ git clone -n https://src.fedoraproject.org/rpms/anaconda.git /var/lib/mock/f41-build-side-1-2645820-27204/root/chroot_tmpdir/scmroot/anaconda
Cloning into '/var/lib/mock/f41-build-side-1-2645820-27204/root/chroot_tmpdir/scmroot/anaconda'...
$ git fetch origin f81367e47caba56a1137067294bdcd4c62f123ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/anaconda
 * [new ref]         f81367e47caba56a1137067294bdcd4c62f123ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f81367e Rebuild to get a combined update with anaconda-webui