$ git clone -n https://src.fedoraproject.org/rpms/icu.git /var/lib/mock/f39-build-1923616-43008/root/chroot_tmpdir/scmroot/icu
Cloning into '/var/lib/mock/f39-build-1923616-43008/root/chroot_tmpdir/scmroot/icu'...
$ git fetch origin 92b6490c321dab522e5334e5b6a1b57288f85116:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/icu
 * [new ref]         92b6490c321dab522e5334e5b6a1b57288f85116 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92b6490 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild