$ git clone -n https://src.fedoraproject.org/rpms/python-expecttest.git /var/lib/mock/f45-build-30605-646/root/chroot_tmpdir/scmroot/python-expecttest
Cloning into '/var/lib/mock/f45-build-30605-646/root/chroot_tmpdir/scmroot/python-expecttest'...
$ git fetch origin c6ed11653152ae6aa660d53b46b0ea314b5cb4e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-expecttest
 * [new ref]         c6ed11653152ae6aa660d53b46b0ea314b5cb4e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6ed116 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild