$ git clone -n https://src.fedoraproject.org/rpms/sng.git /var/lib/mock/f41-build-side-1-2670034-28995/root/chroot_tmpdir/scmroot/sng
Cloning into '/var/lib/mock/f41-build-side-1-2670034-28995/root/chroot_tmpdir/scmroot/sng'...
$ git fetch origin 61538f42a3358ddda75cd851ba4188eee6a7703c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sng
 * [new ref]         61538f42a3358ddda75cd851ba4188eee6a7703c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61538f4 Apply distro linker flags