$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-xml2.git /var/lib/mock/f41-build-838544-159749/root/chroot_tmpdir/scmroot/R-xml2
Cloning into '/var/lib/mock/f41-build-838544-159749/root/chroot_tmpdir/scmroot/R-xml2'...
$ git fetch origin 4243f22859ef7baa71a5b028cc1fa9feb86f4ad9:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-xml2
 * [new ref]         4243f22859ef7baa71a5b028cc1fa9feb86f4ad9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4243f22 Disable checks to bootstrap testthat