$ git clone -n https://src.fedoraproject.org/rpms/gnutls.git /var/lib/mock/f41-build-side-1-2646789-27250/root/chroot_tmpdir/scmroot/gnutls
Cloning into '/var/lib/mock/f41-build-side-1-2646789-27250/root/chroot_tmpdir/scmroot/gnutls'...
$ git fetch origin 7d85f316547ff2c84f6458f4a146600f7edb7e76:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnutls
 * [new ref]         7d85f316547ff2c84f6458f4a146600f7edb7e76 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d85f31 Stop pulling in compression libraries through gnutls.pc