$ git clone -n https://src.fedoraproject.org/rpms/grub2.git /var/lib/mock/f31-build-108333-33831/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/f31-build-108333-33831/root/chroot_tmpdir/scmroot/grub2'...
$ git reset --hard c432d1fe962d686bfc1f0f360ba30babf3bd4fbd
Checking out files:  62% (126/202)   
Checking out files:  63% (128/202)   
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Checking out files: 100% (202/202)   
Checking out files: 100% (202/202), done.
HEAD is now at c432d1f Include regexp module in EFI builds