$ git clone -n https://src.fedoraproject.org/rpms/bcachefs-tools.git /var/lib/mock/f41-build-857323-168040/root/chroot_tmpdir/scmroot/bcachefs-tools
Cloning into '/var/lib/mock/f41-build-857323-168040/root/chroot_tmpdir/scmroot/bcachefs-tools'...
$ git fetch origin c1b0d559c2c473a824f777d25693e39a0b5db659:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bcachefs-tools
 * [new ref]         c1b0d559c2c473a824f777d25693e39a0b5db659 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1b0d55 Update to 1.13.0