$ git clone -n https://src.fedoraproject.org/rpms/R-qpdf.git /var/lib/mock/f38-build-724236-99404/root/chroot_tmpdir/scmroot/R-qpdf
Cloning into '/var/lib/mock/f38-build-724236-99404/root/chroot_tmpdir/scmroot/R-qpdf'...
$ git reset --hard 4de57c9048498b9d71ba4317db5915844ddeeafa
HEAD is now at 4de57c9 R-maint-sig mass rebuild