$ git clone -n https://src.fedoraproject.org/rpms/gtkwave.git /var/lib/mock/f45-build-13182-447/root/chroot_tmpdir/scmroot/gtkwave
Cloning into '/var/lib/mock/f45-build-13182-447/root/chroot_tmpdir/scmroot/gtkwave'...
$ git fetch origin 7575c5c511611f511e6be319d1a0fabcb8f1e172:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkwave
 * [new ref]         7575c5c511611f511e6be319d1a0fabcb8f1e172 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7575c5c Update to 3.3.128