$ git clone -n https://src.fedoraproject.org/rpms/bcache-tools.git /var/lib/mock/f42-build-3273544-41312/root/chroot_tmpdir/scmroot/bcache-tools
Cloning into '/var/lib/mock/f42-build-3273544-41312/root/chroot_tmpdir/scmroot/bcache-tools'...
$ git fetch origin 3a03634e8a304fe6b6abb19aea21639113b9453d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bcache-tools
 * [new ref]         3a03634e8a304fe6b6abb19aea21639113b9453d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a03634 Fix the reverted SPDX change (III)