$ git clone -n https://src.fedoraproject.org/rpms/golang-github-flynn-json5.git /var/lib/mock/f40-build-2281628-55486/root/chroot_tmpdir/scmroot/golang-github-flynn-json5
Cloning into '/var/lib/mock/f40-build-2281628-55486/root/chroot_tmpdir/scmroot/golang-github-flynn-json5'...
$ git fetch origin 6477cc54952060c5cddac756cc92636e8756e239:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-flynn-json5
 * [new ref]         6477cc54952060c5cddac756cc92636e8756e239 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6477cc5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild