$ git clone -n https://src.fedoraproject.org/rpms/mp.git /var/lib/mock/f40-build-2506429-61702/root/chroot_tmpdir/scmroot/mp
Cloning into '/var/lib/mock/f40-build-2506429-61702/root/chroot_tmpdir/scmroot/mp'...
$ git fetch origin 04869ac1e53dd1a96282bf109892a485c9a875cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mp
 * [new ref]         04869ac1e53dd1a96282bf109892a485c9a875cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04869ac Rebuilt for java-21-openjdk as system jdk