$ git clone -n https://src.fedoraproject.org/rpms/ardour7.git /var/lib/mock/f39-build-1581771-38095/root/chroot_tmpdir/scmroot/ardour7
Cloning into '/var/lib/mock/f39-build-1581771-38095/root/chroot_tmpdir/scmroot/ardour7'...
$ git fetch origin de9a75555c10ba56782b4eca681730e3d8624ab0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ardour7
 * [new ref]         de9a75555c10ba56782b4eca681730e3d8624ab0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de9a755 Deal with kissfft >= 130