$ git clone -n https://src.fedoraproject.org/rpms/python-bottle.git /var/lib/mock/f45-build-29811-641/root/chroot_tmpdir/scmroot/python-bottle
Cloning into '/var/lib/mock/f45-build-29811-641/root/chroot_tmpdir/scmroot/python-bottle'...
$ git fetch origin d351214b5ba2f34c2a2f7aa840ba264d9ced6afe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bottle
 * [new ref]         d351214b5ba2f34c2a2f7aa840ba264d9ced6afe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d351214 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild