$ git clone -n https://src.fedoraproject.org/rpms/perl-re-engine-RE2.git /var/lib/mock/f31-build-89247-32069/root/chroot_tmpdir/scmroot/perl-re-engine-RE2
Cloning into '/var/lib/mock/f31-build-89247-32069/root/chroot_tmpdir/scmroot/perl-re-engine-RE2'...
$ git reset --hard cad7c93baf3c232b8e9dc4dc373078a29c7300c9
HEAD is now at cad7c93 Rebuilt for new RE2 version (BZ#1672014)