$ git clone -n https://src.fedoraproject.org/rpms/rust-nix0.14.git /var/lib/mock/f38-build-side-43-rust-devel-1422238-31465/root/chroot_tmpdir/scmroot/rust-nix0.14
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1422238-31465/root/chroot_tmpdir/scmroot/rust-nix0.14'...
$ git fetch origin 1ec49003f8934cbc0fcf6161f2490fa9f6c0e3ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nix0.14
 * [new ref]         1ec49003f8934cbc0fcf6161f2490fa9f6c0e3ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ec4900 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild