$ git clone -n https://src.fedoraproject.org/rpms/rust-tempdir.git /var/lib/mock/f40-build-2659088-66918/root/chroot_tmpdir/scmroot/rust-tempdir
Cloning into '/var/lib/mock/f40-build-2659088-66918/root/chroot_tmpdir/scmroot/rust-tempdir'...
$ git fetch origin 016086d463e8ac759c9d2a9441001d6d4eba4c40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tempdir
 * [new ref]         016086d463e8ac759c9d2a9441001d6d4eba4c40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 016086d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild