$ git clone -n https://src.fedoraproject.org/rpms/libcangjie.git /var/lib/mock/f45-build-15927-480/root/chroot_tmpdir/scmroot/libcangjie
Cloning into '/var/lib/mock/f45-build-15927-480/root/chroot_tmpdir/scmroot/libcangjie'...
$ git fetch origin 52fcf95b848a6cab0ac5e4cb1d8fc024ba47e30d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcangjie
 * [new ref]         52fcf95b848a6cab0ac5e4cb1d8fc024ba47e30d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52fcf95 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild