$ git clone -n https://src.fedoraproject.org/rpms/python-varint.git /var/lib/mock/f45-build-33554-670/root/chroot_tmpdir/scmroot/python-varint
Cloning into '/var/lib/mock/f45-build-33554-670/root/chroot_tmpdir/scmroot/python-varint'...
$ git fetch origin 49ffb09751f17778c900ca4d18f9c3acb2e67cbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-varint
 * [new ref]         49ffb09751f17778c900ca4d18f9c3acb2e67cbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49ffb09 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild