$ git clone -n https://src.fedoraproject.org/rpms/rust-rustix.git /var/lib/mock/f40-build-2439610-60958/root/chroot_tmpdir/scmroot/rust-rustix
Cloning into '/var/lib/mock/f40-build-2439610-60958/root/chroot_tmpdir/scmroot/rust-rustix'...
$ git fetch origin 6497ad5d95cc4b981e480166c0c59d05fd40c6ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustix
 * [new ref]         6497ad5d95cc4b981e480166c0c59d05fd40c6ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6497ad5 Update to version 0.38.31; Fixes RHBZ#2262279