$ git clone -n https://src.fedoraproject.org/rpms/R-readxl.git /var/lib/mock/f31-build-74174-31087/root/chroot_tmpdir/scmroot/R-readxl
Cloning into '/var/lib/mock/f31-build-74174-31087/root/chroot_tmpdir/scmroot/R-readxl'...
$ git reset --hard 01b63fda09ec7216b90a7ac1fe3ed2fb2b7282ef
HEAD is now at 01b63fd - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild