$ git clone -n https://src.fedoraproject.org/rpms/rust-rustix.git /var/lib/mock/f38-build-side-42-init-devel-1138487-30393/root/chroot_tmpdir/scmroot/rust-rustix
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1138487-30393/root/chroot_tmpdir/scmroot/rust-rustix'...
$ git fetch origin 691df4436b2b5b2afec1e74e98be9289a9212c1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustix
 * [new ref]         691df4436b2b5b2afec1e74e98be9289a9212c1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 691df44 Update to version 0.37.23