$ git clone -n https://src.fedoraproject.org/rpms/rust-cipher.git /var/lib/mock/f39-build-1493499-34539/root/chroot_tmpdir/scmroot/rust-cipher
Cloning into '/var/lib/mock/f39-build-1493499-34539/root/chroot_tmpdir/scmroot/rust-cipher'...
$ git fetch origin c9aaa3c6c2463b208927eb60c6dc9adb1cc14140:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cipher
 * [new ref]         c9aaa3c6c2463b208927eb60c6dc9adb1cc14140 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9aaa3c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild