$ git clone -n https://src.fedoraproject.org/rpms/rust-blosc2-rs.git /var/lib/mock/f41-build-side-1-3006116-36735/root/chroot_tmpdir/scmroot/rust-blosc2-rs
Cloning into '/var/lib/mock/f41-build-side-1-3006116-36735/root/chroot_tmpdir/scmroot/rust-blosc2-rs'...
$ git fetch origin d74f642f166ed5adf2f9456079d19a637d8c9bb7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-blosc2-rs
 * [new ref]         d74f642f166ed5adf2f9456079d19a637d8c9bb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d74f642 Initial package (close RHBZ#2312901)