$ git clone -n https://src.fedoraproject.org/rpms/rust-uncased.git /var/lib/mock/f40-build-2064182-49167/root/chroot_tmpdir/scmroot/rust-uncased
Cloning into '/var/lib/mock/f40-build-2064182-49167/root/chroot_tmpdir/scmroot/rust-uncased'...
$ git fetch origin 864daa0d76e07e808a26e985a18b0886921ffc4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uncased
 * [new ref]         864daa0d76e07e808a26e985a18b0886921ffc4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 864daa0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild