$ git clone -n https://src.fedoraproject.org/rpms/python-zstarfile.git /var/lib/mock/f45-build-33835-674/root/chroot_tmpdir/scmroot/python-zstarfile
Cloning into '/var/lib/mock/f45-build-33835-674/root/chroot_tmpdir/scmroot/python-zstarfile'...
$ git fetch origin 9e2541058df7c129175c3453a973a1370fb2b9e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-zstarfile
 * [new ref]         9e2541058df7c129175c3453a973a1370fb2b9e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e25410 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild