$ git clone -n https://github.com/fedora-riscv/bcal.git /var/lib/mock/f40-build-2506303-61702/root/chroot_tmpdir/scmroot/bcal
Cloning into '/var/lib/mock/f40-build-2506303-61702/root/chroot_tmpdir/scmroot/bcal'...
$ git fetch origin cbc36e680e5521b4549817ea66cc1f86923d1a11:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/bcal
 * [new ref]         cbc36e680e5521b4549817ea66cc1f86923d1a11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbc36e6 Add riscv64 support.