$ git clone -n https://src.fedoraproject.org/rpms/R-callr.git /var/lib/mock/f37-build-side-32-misc-devel-362750-15628/root/chroot_tmpdir/scmroot/R-callr
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-362750-15628/root/chroot_tmpdir/scmroot/R-callr'...
$ git reset --hard 73880b2f8eccd3777856640ce2aadb58d177baba
HEAD is now at 73880b2 Disable bootstrap