$ git clone -n https://src.fedoraproject.org/rpms/jackson-modules-base.git /var/lib/mock/f41-build-1041135-18976/root/chroot_tmpdir/scmroot/jackson-modules-base
Cloning into '/var/lib/mock/f41-build-1041135-18976/root/chroot_tmpdir/scmroot/jackson-modules-base'...
$ git fetch origin e413d085cac22af5f414c735ae063018d5a8023c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-modules-base
 * [new ref]         e413d085cac22af5f414c735ae063018d5a8023c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e413d08 Update to 2.17.1 upstream release