$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-parser.git /var/lib/mock/f39-build-2261330-54414/root/chroot_tmpdir/scmroot/rust-nu-parser
Cloning into '/var/lib/mock/f39-build-2261330-54414/root/chroot_tmpdir/scmroot/rust-nu-parser'...
$ git fetch origin a9af8fca03543d3125db8a4709845417e29200ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-parser
 * [new ref]         a9af8fca03543d3125db8a4709845417e29200ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9af8fc Update to 0.88.1