$ git clone -n https://src.fedoraproject.org/rpms/yosys.git /var/lib/mock/f40-build-1937322-25150/root/chroot_tmpdir/scmroot/yosys
Cloning into '/var/lib/mock/f40-build-1937322-25150/root/chroot_tmpdir/scmroot/yosys'...
$ git fetch origin 846eef0c6a4b9682354ee67877623afb749c1772:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yosys
 * [new ref]         846eef0c6a4b9682354ee67877623afb749c1772 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 846eef0 update to 0.43 snapshot