$ git clone -n https://src.fedoraproject.org/rpms/calls.git /var/lib/mock/f41-build-side-1-2656041-28431/root/chroot_tmpdir/scmroot/calls
Cloning into '/var/lib/mock/f41-build-side-1-2656041-28431/root/chroot_tmpdir/scmroot/calls'...
$ git fetch origin 14b455e27274904ee36f7f82f8135bb6df07643b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calls
 * [new ref]         14b455e27274904ee36f7f82f8135bb6df07643b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14b455e Upstream release v47.0 (fedora#2309011)