$ git clone -n https://src.fedoraproject.org/rpms/re2.git /var/lib/mock/f31-build-76743-31448/root/chroot_tmpdir/scmroot/re2
Cloning into '/var/lib/mock/f31-build-76743-31448/root/chroot_tmpdir/scmroot/re2'...
$ git reset --hard 3786c80ff38cb2133e15191937ece01e7f5dd6c7
HEAD is now at 3786c80 update to 20190801