$ git clone -n https://src.fedoraproject.org/rpms/rust-bindgen.git /var/lib/mock/f40-build-2710840-71775/root/chroot_tmpdir/scmroot/rust-bindgen
Cloning into '/var/lib/mock/f40-build-2710840-71775/root/chroot_tmpdir/scmroot/rust-bindgen'...
$ git fetch origin eb1b7ef6922ded39bb3d24b17ab62ece6f217d32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bindgen
 * [new ref]         eb1b7ef6922ded39bb3d24b17ab62ece6f217d32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb1b7ef Update to version 0.69.4; Fixes RHBZ#2247521