$ git clone -n https://src.fedoraproject.org/rpms/R-biglm.git /var/lib/mock/f37-build-641362-71922/root/chroot_tmpdir/scmroot/R-biglm
Cloning into '/var/lib/mock/f37-build-641362-71922/root/chroot_tmpdir/scmroot/R-biglm'...
$ git reset --hard 42b3b30c1c181963dda5bb36c797d490eec3be3d
HEAD is now at 42b3b30 rebuild for R 4.2.1