$ git clone -n https://src.fedoraproject.org/rpms/python-pecan.git /var/lib/mock/f45-build-31885-656/root/chroot_tmpdir/scmroot/python-pecan
Cloning into '/var/lib/mock/f45-build-31885-656/root/chroot_tmpdir/scmroot/python-pecan'...
$ git fetch origin 4c83b4ccfb62e7e89970bdcdfa2f387738d172f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pecan
 * [new ref]         4c83b4ccfb62e7e89970bdcdfa2f387738d172f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c83b4c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild