$ git clone -n https://src.fedoraproject.org/rpms/rust-libhandy-sys.git /var/lib/mock/f40-build-2108816-50614/root/chroot_tmpdir/scmroot/rust-libhandy-sys
Cloning into '/var/lib/mock/f40-build-2108816-50614/root/chroot_tmpdir/scmroot/rust-libhandy-sys'...
$ git fetch origin 2f446cd91a671d09591bbdaa2fc4a6bfc958e1f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libhandy-sys
 * [new ref]         2f446cd91a671d09591bbdaa2fc4a6bfc958e1f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f446cd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild