$ git clone -n https://src.fedoraproject.org/rpms/yosys.git /var/lib/mock/f40-build-2414744-60564/root/chroot_tmpdir/scmroot/yosys
Cloning into '/var/lib/mock/f40-build-2414744-60564/root/chroot_tmpdir/scmroot/yosys'...
$ git fetch origin 0ba53f26a02f6f74f3ee677d02e6da2422a9ec69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yosys
 * [new ref]         0ba53f26a02f6f74f3ee677d02e6da2422a9ec69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ba53f2 update to 0.38 snapshot