$ git clone -n https://src.fedoraproject.org/rpms/hwdata.git /var/lib/mock/f42-build-side-1-3583770-46890/root/chroot_tmpdir/scmroot/hwdata
Cloning into '/var/lib/mock/f42-build-side-1-3583770-46890/root/chroot_tmpdir/scmroot/hwdata'...
$ git fetch origin ba2b46ed5d291d6426b50c5f6ec5f8806cedecfb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hwdata
 * [new ref]         ba2b46ed5d291d6426b50c5f6ec5f8806cedecfb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba2b46e New upstream version 0.397