$ git clone -n https://src.fedoraproject.org/rpms/rust-nu.git /var/lib/mock/f41-build-835742-158631/root/chroot_tmpdir/scmroot/rust-nu
Cloning into '/var/lib/mock/f41-build-835742-158631/root/chroot_tmpdir/scmroot/rust-nu'...
$ git fetch origin d6bb4b81f0ebbf8ff2ffe355e5b3862ba654cfa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu
 * [new ref]         d6bb4b81f0ebbf8ff2ffe355e5b3862ba654cfa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6bb4b8 Update to version 0.96.1; Fixes: RHBZ#2272719