$ git clone -n http://fedora.riscv.rocks:3000/rpms/java-21-openjdk.git /var/lib/mock/f40-build-789651-135946/root/chroot_tmpdir/scmroot/java-21-openjdk
Cloning into '/var/lib/mock/f40-build-789651-135946/root/chroot_tmpdir/scmroot/java-21-openjdk'...
$ git fetch origin c89b1018675396a10a826f28bc2f7623d2f94298:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/java-21-openjdk
 * [new ref]         c89b1018675396a10a826f28bc2f7623d2f94298 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c89b101 Fix src_image for riscv64 builds