$ git clone -n https://src.fedoraproject.org/rpms/gtkwave.git /var/lib/mock/f39-build-1497434-34613/root/chroot_tmpdir/scmroot/gtkwave
Cloning into '/var/lib/mock/f39-build-1497434-34613/root/chroot_tmpdir/scmroot/gtkwave'...
$ git fetch origin ae7b2652cfa332a993ecb4a07adda6a842b1acc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkwave
 * [new ref]         ae7b2652cfa332a993ecb4a07adda6a842b1acc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae7b265 Update to 3.3.117