$ git clone -n https://src.fedoraproject.org/rpms/jackson-databind.git /var/lib/mock/f41-build-1182577-21975/root/chroot_tmpdir/scmroot/jackson-databind
Cloning into '/var/lib/mock/f41-build-1182577-21975/root/chroot_tmpdir/scmroot/jackson-databind'...
$ git fetch origin ac23a76e8d30ac2559a3574274f7aebb3fdbbfd5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-databind
 * [new ref]         ac23a76e8d30ac2559a3574274f7aebb3fdbbfd5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac23a76 Update to 2.17.1 upstream release