$ git clone -n https://src.fedoraproject.org/rpms/rust-jxl-frame.git /var/lib/mock/f40-build-2642046-66442/root/chroot_tmpdir/scmroot/rust-jxl-frame
Cloning into '/var/lib/mock/f40-build-2642046-66442/root/chroot_tmpdir/scmroot/rust-jxl-frame'...
$ git fetch origin d14b53e176783a88b1475fddd9500ef3be89cbcc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-jxl-frame
 * [new ref]         d14b53e176783a88b1475fddd9500ef3be89cbcc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d14b53e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild