$ git clone -n https://src.fedoraproject.org/rpms/dmidecode.git /var/lib/mock/f41-build-855759-167369/root/chroot_tmpdir/scmroot/dmidecode
Cloning into '/var/lib/mock/f41-build-855759-167369/root/chroot_tmpdir/scmroot/dmidecode'...
$ git fetch origin e056f46a9a703f5c8f201b221972a7c867dc7cc4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dmidecode
 * [new ref]         e056f46a9a703f5c8f201b221972a7c867dc7cc4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e056f46 fix release