$ git clone -n https://src.fedoraproject.org/rpms/matio.git /var/lib/mock/f40-build-2010177-45567/root/chroot_tmpdir/scmroot/matio
Cloning into '/var/lib/mock/f40-build-2010177-45567/root/chroot_tmpdir/scmroot/matio'...
$ git fetch origin d973d0df569743e838b2929bfd88144f80c7fad2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matio
 * [new ref]         d973d0df569743e838b2929bfd88144f80c7fad2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d973d0d 1.5.26