$ git clone -n https://src.fedoraproject.org/rpms/gprconfig-kb.git /var/lib/mock/f45-build-12950-444/root/chroot_tmpdir/scmroot/gprconfig-kb
Cloning into '/var/lib/mock/f45-build-12950-444/root/chroot_tmpdir/scmroot/gprconfig-kb'...
$ git fetch origin 00ddc7b3cd3112f41053c1fb2d134eedfad64e5b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gprconfig-kb
 * [new ref]         00ddc7b3cd3112f41053c1fb2d134eedfad64e5b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00ddc7b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild