$ git clone -n https://src.fedoraproject.org/rpms/xnvme.git /var/lib/mock/f40-build-796908-140983/root/chroot_tmpdir/scmroot/xnvme
Cloning into '/var/lib/mock/f40-build-796908-140983/root/chroot_tmpdir/scmroot/xnvme'...
$ git fetch origin 8bd1b07a40f0796fb4d2d09f9fb13861fb13f336:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xnvme
 * [new ref]         8bd1b07a40f0796fb4d2d09f9fb13861fb13f336 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bd1b07 Initial version