$ git clone -n https://src.fedoraproject.org/rpms/jackson-core.git /var/lib/mock/f40-build-2610794-63893/root/chroot_tmpdir/scmroot/jackson-core
Cloning into '/var/lib/mock/f40-build-2610794-63893/root/chroot_tmpdir/scmroot/jackson-core'...
$ git fetch origin 86119649f613f5902393acf912fddc92b2b7d653:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-core
 * [new ref]         86119649f613f5902393acf912fddc92b2b7d653 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8611964 Rebuilt for java-21-openjdk as system jdk