$ git clone -n https://src.fedoraproject.org/rpms/yosys.git /var/lib/mock/f39-build-1747438-41430/root/chroot_tmpdir/scmroot/yosys
Cloning into '/var/lib/mock/f39-build-1747438-41430/root/chroot_tmpdir/scmroot/yosys'...
$ git fetch origin 5f879a1ebfdf4e96729dc040f25db84244e5635a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yosys
 * [new ref]         5f879a1ebfdf4e96729dc040f25db84244e5635a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f879a1 update to 0.35