$ git clone -n https://src.fedoraproject.org/rpms/gdcm.git /var/lib/mock/f31-build-107331-33668/root/chroot_tmpdir/scmroot/gdcm
Cloning into '/var/lib/mock/f31-build-107331-33668/root/chroot_tmpdir/scmroot/gdcm'...
$ git reset --hard 3d3af5e9a9f8948ca3b32d12ebe5d5ecbebf2e52
HEAD is now at 3d3af5e Rebuild for dcmtk-3.6.4