$ git clone -n https://src.fedoraproject.org/forks/churchyard/rpms/pyproject-rpm-macros.git /var/lib/mock/f42-build-61007470-6587571/root/chroot_tmpdir/scmroot/pyproject-rpm-macros
Cloning into '/var/lib/mock/f42-build-61007470-6587571/root/chroot_tmpdir/scmroot/pyproject-rpm-macros'...
$ git fetch origin f0b3a0b8601532f46bace61a9703fd328f48db60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/churchyard/rpms/pyproject-rpm-macros
 * [new ref]         f0b3a0b8601532f46bace61a9703fd328f48db60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0b3a0b Avoid non-fatal errors in %pyproject_install with multiple wheels