$ git clone -n https://src.fedoraproject.org/rpms/fawltydeps.git /var/lib/mock/f41-build-side-1-2786440-32610/root/chroot_tmpdir/scmroot/fawltydeps
Cloning into '/var/lib/mock/f41-build-side-1-2786440-32610/root/chroot_tmpdir/scmroot/fawltydeps'...
$ git fetch origin 0028b8a4fc207212f3fa6c7e9b58ecf33aa1f3e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fawltydeps
 * [new ref]         0028b8a4fc207212f3fa6c7e9b58ecf33aa1f3e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0028b8a Enable uv extra