$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-parser.git /var/lib/mock/f40-build-2157142-50922/root/chroot_tmpdir/scmroot/rust-nu-parser
Cloning into '/var/lib/mock/f40-build-2157142-50922/root/chroot_tmpdir/scmroot/rust-nu-parser'...
$ git fetch origin fad9fb2ae1b9d1495fc1df3f2004a54c714c6761:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-parser
 * [new ref]         fad9fb2ae1b9d1495fc1df3f2004a54c714c6761 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fad9fb2 Update to 0.86.0