$ git clone -n https://src.fedoraproject.org/rpms/python-flexcache.git /var/lib/mock/f45-build-30657-647/root/chroot_tmpdir/scmroot/python-flexcache
Cloning into '/var/lib/mock/f45-build-30657-647/root/chroot_tmpdir/scmroot/python-flexcache'...
$ git fetch origin 422f113e45514424639961b7af2a950b52042723:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flexcache
 * [new ref]         422f113e45514424639961b7af2a950b52042723 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 422f113 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild