$ git clone -n https://src.fedoraproject.org/rpms/armadillo.git /var/lib/mock/f40-build-2207127-52078/root/chroot_tmpdir/scmroot/armadillo
Cloning into '/var/lib/mock/f40-build-2207127-52078/root/chroot_tmpdir/scmroot/armadillo'...
$ git fetch origin c6c9f81f1f2ba6170889edc1f5315f40569894df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/armadillo
 * [new ref]         c6c9f81f1f2ba6170889edc1f5315f40569894df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6c9f81 Fix changed filename of PDF.