$ git clone -n https://src.fedoraproject.org/rpms/CFR.git /var/lib/mock/f40-build-2668002-67179/root/chroot_tmpdir/scmroot/CFR
Cloning into '/var/lib/mock/f40-build-2668002-67179/root/chroot_tmpdir/scmroot/CFR'...
$ git fetch origin 88197237e12233312b5193cf7d4b5e21696778c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/CFR
 * [new ref]         88197237e12233312b5193cf7d4b5e21696778c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8819723 Rebuilt for java-21-openjdk as system jdk