$ git clone -n https://src.fedoraproject.org/rpms/rust-rfc2047-decoder.git /var/lib/mock/f40-build-2652113-66890/root/chroot_tmpdir/scmroot/rust-rfc2047-decoder
Cloning into '/var/lib/mock/f40-build-2652113-66890/root/chroot_tmpdir/scmroot/rust-rfc2047-decoder'...
$ git fetch origin c38ee5384e16c9a125cc107e3865f31ce98a5b80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rfc2047-decoder
 * [new ref]         c38ee5384e16c9a125cc107e3865f31ce98a5b80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c38ee53 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild