$ git clone -n https://src.fedoraproject.org/rpms/dwz.git /var/lib/mock/f42-build-side-1-3534402-46548/root/chroot_tmpdir/scmroot/dwz
Cloning into '/var/lib/mock/f42-build-side-1-3534402-46548/root/chroot_tmpdir/scmroot/dwz'...
$ git fetch origin d7a08a2370efdf3512c03c6207d494a70ff72332:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dwz
 * [new ref]         d7a08a2370efdf3512c03c6207d494a70ff72332 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7a08a2 0.16-1