$ git clone -n https://src.fedoraproject.org/rpms/anaconda.git /var/lib/mock/f41-build-side-1-2844806-33879/root/chroot_tmpdir/scmroot/anaconda
Cloning into '/var/lib/mock/f41-build-side-1-2844806-33879/root/chroot_tmpdir/scmroot/anaconda'...
$ git fetch origin 305c6b835ab4bb543c9494c3df8012cb2dda045c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/anaconda
 * [new ref]         305c6b835ab4bb543c9494c3df8012cb2dda045c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 305c6b8 Update to 41.34 upstream release