$ git clone -n https://src.fedoraproject.org/rpms/gtkwave.git /var/lib/mock/f40-build-2669641-67266/root/chroot_tmpdir/scmroot/gtkwave
Cloning into '/var/lib/mock/f40-build-2669641-67266/root/chroot_tmpdir/scmroot/gtkwave'...
$ git fetch origin dcff5948b77147c0d203be87fa4f0b1205291357:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkwave
 * [new ref]         dcff5948b77147c0d203be87fa4f0b1205291357 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcff594 Update to 3.3.119