$ git clone -n https://src.fedoraproject.org/rpms/libosmocore.git /var/lib/mock/f29-build-3050-841/root/thebuilddir/tmp/scmroot/libosmocore
Cloning into '/var/lib/mock/f29-build-3050-841/root/thebuilddir/tmp/scmroot/libosmocore'...
$ git reset --hard b22053f0c12e14bff7267100b1b079cfaf2fd70d
HEAD is now at b22053f - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild