$ git clone -n https://src.fedoraproject.org/rpms/rust-josekit.git /var/lib/mock/f38-build-side-43-rust-devel-1412591-31443/root/chroot_tmpdir/scmroot/rust-josekit
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412591-31443/root/chroot_tmpdir/scmroot/rust-josekit'...
$ git fetch origin d81a89dec121c526226b8c0ced64d901abcf87fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-josekit
 * [new ref]         d81a89dec121c526226b8c0ced64d901abcf87fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d81a89d Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild