$ git clone -n https://src.fedoraproject.org/rpms/rust-matrixcompare.git /var/lib/mock/f40-build-2681831-67962/root/chroot_tmpdir/scmroot/rust-matrixcompare
Cloning into '/var/lib/mock/f40-build-2681831-67962/root/chroot_tmpdir/scmroot/rust-matrixcompare'...
$ git fetch origin b546878dc79ee7eea6c4e0ddfbaca7061cee9e9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-matrixcompare
 * [new ref]         b546878dc79ee7eea6c4e0ddfbaca7061cee9e9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b546878 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild