$ git clone -n https://src.fedoraproject.org/rpms/cross-binutils.git /var/lib/mock/f40-build-762423-122036/root/chroot_tmpdir/scmroot/cross-binutils
Cloning into '/var/lib/mock/f40-build-762423-122036/root/chroot_tmpdir/scmroot/cross-binutils'...
$ git fetch origin 12c12608bdaf511e6e7a486ba6fdbf2c871ddf4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cross-binutils
 * [new ref]         12c12608bdaf511e6e7a486ba6fdbf2c871ddf4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12c1260 Spec File: migrated to SPDX license.