$ git clone -n https://src.fedoraproject.org/rpms/xnvme.git /var/lib/mock/f45-build-38994-731/root/chroot_tmpdir/scmroot/xnvme
Cloning into '/var/lib/mock/f45-build-38994-731/root/chroot_tmpdir/scmroot/xnvme'...
$ git fetch origin fc2a7f9c41e6e9ef414e427abb4047dec34fce14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xnvme
 * [new ref]         fc2a7f9c41e6e9ef414e427abb4047dec34fce14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc2a7f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild