$ git clone -n https://src.fedoraproject.org/rpms/python-extractcode.git /var/lib/mock/f45-build-30567-646/root/chroot_tmpdir/scmroot/python-extractcode
Cloning into '/var/lib/mock/f45-build-30567-646/root/chroot_tmpdir/scmroot/python-extractcode'...
$ git fetch origin 1121c286485345159103859933114c6aa5260d1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-extractcode
 * [new ref]         1121c286485345159103859933114c6aa5260d1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1121c28 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild