$ git clone -n https://src.fedoraproject.org/rpms/cross-binutils.git /var/lib/mock/f45-build-5701-341/root/chroot_tmpdir/scmroot/cross-binutils
Cloning into '/var/lib/mock/f45-build-5701-341/root/chroot_tmpdir/scmroot/cross-binutils'...
$ git fetch origin 07c2dd0fde8b31f963601c054f776d522dba869d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cross-binutils
 * [new ref]         07c2dd0fde8b31f963601c054f776d522dba869d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07c2dd0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild