$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-rprojroot.git /var/lib/mock/f41-build-838751-159764/root/chroot_tmpdir/scmroot/R-rprojroot
Cloning into '/var/lib/mock/f41-build-838751-159764/root/chroot_tmpdir/scmroot/R-rprojroot'...
$ git fetch origin ab69a0c606af0b0c47955d5a1286fc344d981427:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-rprojroot
 * [new ref]         ab69a0c606af0b0c47955d5a1286fc344d981427 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab69a0c Enable bootstrap