$ git clone -n https://src.fedoraproject.org/rpms/ppc64-diag.git /var/lib/mock/f38-build-722399-98795/root/chroot_tmpdir/scmroot/ppc64-diag
Cloning into '/var/lib/mock/f38-build-722399-98795/root/chroot_tmpdir/scmroot/ppc64-diag'...
$ git fetch origin 9aa7efa93eb5bda1c49861851d84ae0f7b76c625:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ppc64-diag
 * [new ref]         9aa7efa93eb5bda1c49861851d84ae0f7b76c625 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9aa7efa fix rpm file list