$ git clone -n https://src.fedoraproject.org/rpms/python-gbulb.git /var/lib/mock/f45-build-30789-647/root/chroot_tmpdir/scmroot/python-gbulb
Cloning into '/var/lib/mock/f45-build-30789-647/root/chroot_tmpdir/scmroot/python-gbulb'...
$ git fetch origin 4868e52011810ed0e6e3604ac47efbde5f5e9865:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gbulb
 * [new ref]         4868e52011810ed0e6e3604ac47efbde5f5e9865 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4868e52 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild