$ git clone -n https://src.fedoraproject.org/rpms/jackson-core.git /var/lib/mock/f39-build-1841081-41987/root/chroot_tmpdir/scmroot/jackson-core
Cloning into '/var/lib/mock/f39-build-1841081-41987/root/chroot_tmpdir/scmroot/jackson-core'...
$ git fetch origin 2be33bb1a16659ef12a29c39b0d2a06c97e908b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-core
 * [new ref]         2be33bb1a16659ef12a29c39b0d2a06c97e908b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2be33bb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild