$ git clone -n https://src.fedoraproject.org/rpms/jaxb-stax-ex.git /var/lib/mock/f40-build-2346016-59987/root/chroot_tmpdir/scmroot/jaxb-stax-ex
Cloning into '/var/lib/mock/f40-build-2346016-59987/root/chroot_tmpdir/scmroot/jaxb-stax-ex'...
$ git fetch origin dcc7e6c828e9241a39304bfb089d54c2035d2adf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jaxb-stax-ex
 * [new ref]         dcc7e6c828e9241a39304bfb089d54c2035d2adf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcc7e6c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild