$ git clone -n https://src.fedoraproject.org/rpms/raptor2.git /var/lib/mock/f45-build-34320-684/root/chroot_tmpdir/scmroot/raptor2
Cloning into '/var/lib/mock/f45-build-34320-684/root/chroot_tmpdir/scmroot/raptor2'...
$ git fetch origin edb43617b876ac7912e793781ee4da3a7b615cbd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/raptor2
 * [new ref]         edb43617b876ac7912e793781ee4da3a7b615cbd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at edb4361 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild