$ git clone -n https://src.fedoraproject.org/rpms/opendbx.git /var/lib/mock/f45-build-21019-577/root/chroot_tmpdir/scmroot/opendbx
Cloning into '/var/lib/mock/f45-build-21019-577/root/chroot_tmpdir/scmroot/opendbx'...
$ git fetch origin e73d7257b196e7c782ca3939639c65269c5dc890:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opendbx
 * [new ref]         e73d7257b196e7c782ca3939639c65269c5dc890 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e73d725 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild