$ git clone -n https://github.com/xcp-ng-rpms/dmidecode.git /var/lib/mock/v8.3-incoming-10774-29291/root/chroot_tmpdir/scmroot/dmidecode
Cloning into '/var/lib/mock/v8.3-incoming-10774-29291/root/chroot_tmpdir/scmroot/dmidecode'...
$ git fetch origin 0ae521769220188f6ca30d88403f0122ec368dee:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/dmidecode
 * [new ref]         0ae521769220188f6ca30d88403f0122ec368dee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ae5217 Import dmidecode-3.6-3.xs8.src.rpm