$ git clone -n https://src.fedoraproject.org/rpms/jaxb-api.git /var/lib/mock/f40-build-2356988-60307/root/chroot_tmpdir/scmroot/jaxb-api
Cloning into '/var/lib/mock/f40-build-2356988-60307/root/chroot_tmpdir/scmroot/jaxb-api'...
$ git fetch origin 86f7565f2255acbfa0f62877eb6634765d693957:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jaxb-api
 * [new ref]         86f7565f2255acbfa0f62877eb6634765d693957 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86f7565 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild