$ git clone -n https://github.com/xcp-ng-rpms/json-c.git /var/lib/mock/v8.3-u-tescande1-7708-21673/root/chroot_tmpdir/scmroot/json-c
Cloning into '/var/lib/mock/v8.3-u-tescande1-7708-21673/root/chroot_tmpdir/scmroot/json-c'...
$ git reset --hard c05fa5198fd2ff27e03c16615ba11a41d7043cb3
Downloading SOURCES/json-c-0.14-20200419.tar.gz (306 KB)
HEAD is now at c05fa51 Set CMAKE_C_STANDARD=99