$ git clone -n https://src.fedoraproject.org/rpms/dmidecode.git /var/lib/mock/f41-build-1322045-23525/root/chroot_tmpdir/scmroot/dmidecode
Cloning into '/var/lib/mock/f41-build-1322045-23525/root/chroot_tmpdir/scmroot/dmidecode'...
$ git fetch origin 1d8f0ae30ec453a2c948de0c1bf7f0843d6e175f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dmidecode
 * [new ref]         1d8f0ae30ec453a2c948de0c1bf7f0843d6e175f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d8f0ae update to 3.6