$ git clone -n https://src.fedoraproject.org/rpms/java-21-openjdk.git /var/lib/mock/f41-build-side-1-3126975-39530/root/chroot_tmpdir/scmroot/java-21-openjdk
Cloning into '/var/lib/mock/f41-build-side-1-3126975-39530/root/chroot_tmpdir/scmroot/java-21-openjdk'...
$ git fetch origin ac028e0647400d6e60d71d11e08839264a534a66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-21-openjdk
 * [new ref]         ac028e0647400d6e60d71d11e08839264a534a66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac028e0 October CPU repack