$ git clone -n https://src.fedoraproject.org/rpms/rust-simdutf8.git /var/lib/mock/f39-build-1517173-35694/root/chroot_tmpdir/scmroot/rust-simdutf8
Cloning into '/var/lib/mock/f39-build-1517173-35694/root/chroot_tmpdir/scmroot/rust-simdutf8'...
$ git fetch origin 850bf9d65d5edb3a8d1ccf110ffa8a93807a658c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-simdutf8
 * [new ref]         850bf9d65d5edb3a8d1ccf110ffa8a93807a658c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 850bf9d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild