$ git clone -n https://src.fedoraproject.org/rpms/libkexif.git /var/lib/mock/f29-build-6614-1623/root/thebuilddir/tmp/scmroot/libkexif
Cloning into '/var/lib/mock/f29-build-6614-1623/root/thebuilddir/tmp/scmroot/libkexif'...
$ git reset --hard 138c1e021ce5eee267fcb0d022b5d60ef0a1a6f1
HEAD is now at 138c1e0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild