$ git clone -n https://src.fedoraproject.org/rpms/rust-nu.git /var/lib/mock/f41-build-861574-169835/root/chroot_tmpdir/scmroot/rust-nu
Cloning into '/var/lib/mock/f41-build-861574-169835/root/chroot_tmpdir/scmroot/rust-nu'...
$ git fetch origin 7525a87dd1a25f80baa4c763720ca260770f2c98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu
 * [new ref]         7525a87dd1a25f80baa4c763720ca260770f2c98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7525a87 Update to version 0.99.1