$ git clone -n https://src.fedoraproject.org/rpms/python-beanbag.git /var/lib/mock/f45-build-29774-641/root/chroot_tmpdir/scmroot/python-beanbag
Cloning into '/var/lib/mock/f45-build-29774-641/root/chroot_tmpdir/scmroot/python-beanbag'...
$ git fetch origin 8216aeba774a7e55e2a4ce15469c5ec64fd392f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-beanbag
 * [new ref]         8216aeba774a7e55e2a4ce15469c5ec64fd392f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8216aeb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild