$ git clone -n https://src.fedoraproject.org/rpms/fb303.git /var/lib/mock/f38-build-side-42-init-devel-1030760-29718/root/chroot_tmpdir/scmroot/fb303
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1030760-29718/root/chroot_tmpdir/scmroot/fb303'...
$ git fetch origin fd7e30c66449bf3040c1f53325cae82863dd2edd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fb303
 * [new ref]         fd7e30c66449bf3040c1f53325cae82863dd2edd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd7e30c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild