$ git clone -n https://src.fedoraproject.org/rpms/tcl-tkpng.git /var/lib/mock/f31-build-74679-31166/root/chroot_tmpdir/scmroot/tcl-tkpng
Cloning into '/var/lib/mock/f31-build-74679-31166/root/chroot_tmpdir/scmroot/tcl-tkpng'...
$ git reset --hard 38bc42b51820b32b75c43ef0eb65fabb78e8adbc
HEAD is now at 38bc42b - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild