$ git clone -n https://src.fedoraproject.org/rpms/icu4j.git /var/lib/mock/f40-build-2540126-61859/root/chroot_tmpdir/scmroot/icu4j
Cloning into '/var/lib/mock/f40-build-2540126-61859/root/chroot_tmpdir/scmroot/icu4j'...
$ git fetch origin 7a6b967b00028b0c3c51a6e7270a8bf21d2785fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/icu4j
 * [new ref]         7a6b967b00028b0c3c51a6e7270a8bf21d2785fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a6b967 Rebuilt for java-21-openjdk as system jdk